Abbott, Eric A. (author), Schmidt, Allan G. (author), and Yarbrough, J. Paul (author)
Format:
Book chapter
Publication Date:
2000
Published:
USA
Location:
Agricultural Communications Documentation Center, Funk Library, University of Illinois Document Number: C29076
Notes:
Pages 201-226 in Peter F. Korsching, Patricia C. Hipple and Eric A. Abbott (eds.), Having all the right connections: telecommunications and rural viability. Praeger, Westport, Connecticut. 348 pages.
Abbott, Eric A. (author), Schmidt, A. (author), Temnikov, V. (author), Ukhanova, T. (author), and Department of Journalism and Mass Communication, Iowa State University; Department of Journalism and Mass Communication, Iowa State University; Press Video Center, Ministry of Agriculture and Food Procurement, Moscow, Russia; Press Video Center, Ministry of Agriculture and Food Procurement, Moscow, Russia
Format:
Conference paper
Publication Date:
1997
Published:
USA
Location:
Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 101 Document Number: C08709
Notes:
Agricultural Communicators in Education 1997 Conference, Cleveland, Ohio, July 15, 1997
USA: Association of U.S. University Directors of International Agricultural Programs
Location:
Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 121 Document Number: C13864
Notes:
Also see item C02460 in Box 65, 11 p., Agricultural development: systems and communications, held at: University of Rhode Island, Galilee, Rhode Island, June 2-4. 1987
Agricultural Communications Documentation Center, Funk Library, University of Illinois Document Number: C17329
Notes:
A paper presented at the 18th International Conference of Agricultural Economists., Pages 257-261 in Bruce L. Greenshields and Margot A. Bellamy (eds), Rural development: growth and equity. International Association of Agricultural Economists Occasional Paper No. 3. Gower Publishing Company Limited, England. 312 pages.
Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: Byrnes2 Document Number: C12329
Notes:
Francis C. Byrnes Collection, Pages 166-178 in Borton, Raymond E. (ed.), Selected readings to accompany getting agriculture moving. Volume 1. Agricultural Development Council, New York, NY. 526 p.
Findings prompt researchers to recommend the use of information and communications technologies with conventional approaches in conservation agriculture knowledge networks.
James F. Evans Collection; Adapted from a presentation entitled "New paradigms for technology transfer" contained in Conference Proceedings, 1992 Symposium for Research in Agricultural and Extension Education; 1992 May; Columbus, OH
Acker, David (author / Iowa State College) and Carrasco, Alejandrina (author / Iowa State University)
Format:
Proceedings
Publication Date:
2001-04-04
Published:
Cuba: Association for International Agricultural and Extension Education
Location:
Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 138 Document Number: C20920
Notes:
Burton Swanson Collection, pages 71-78, from "Emerging trends in agricultural and extension education", AIAEE 2001, Proceedings of the 17th Annual Conference, April 4-7, 2001, Baton Rouge, Louisiana, USA
Acker, David G. (author / Iowa State University) and Tritz, Julie A. (author / Iowa State University)
Format:
Proceedings
Publication Date:
1999-03-23
Published:
Association for International Agricultural and Extension Education
Location:
Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 138 Document Number: C20992
Notes:
Burton Swanson Collection, 7 pages, Session K, from "1999 conference proceedings -- Association for International Agricultural and Extension Education", 15th Annual Conference, 21-24 March 1999, Port of Spain, Trinidad, 25-26, Tobago
Acker, David G. (author / Iowa State University), Androulidakis, Stavros (author / Technological Educational Institute of Thessaloniki), Lansdale, Elizabeth K. (author), Smith, Bradford K. (author / Ford Foundation), Warner, Randall (author / American Farm School), and Lansdale, Bruce M. (author / American Farm School)
Format:
Proceedings
Publication Date:
2001-04-04
Published:
Europe: Association for International Agricultural and Extension Education
Location:
Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 138 Document Number: C20912
Notes:
Burton Swanson Collection, pages 1-9, from "Emerging trends in agricultural and extension education", AIAEE 2001, Proceedings of the 17th Annual Conference, April 4-7, 2001, Baton Rouge, Louisiana, USA
Adhikarya, Ronny (author), Maalouf, Wajih D. (author), and Contado, Tito E. (author)
Format:
Book chapter
Publication Date:
1991
Published:
International
Location:
Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 116 Document Number: C12672
Notes:
Pages 59-70 in William M. Rivera and Daniel J. Gustafson (eds.), Agricultural Extension: worldwide institutional evolution and forces for change. Elsevier Science Publishers, Amsterdam, The Netherlands. 312 p.
Adovor, Doe (author), Estrada-Valle, Juan (author), Yin, Runsheng (author), and Association for International Agricultural and Extension Education
Format:
Paper
Publication Date:
2009-05
Published:
Afghanistan
Location:
Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 185 Document Number: D00438
Notes:
Pages 1-12 in the proceedings of the 25th annual meeting of the Association for International Agricultural and Extension Education in San Juan, Puerto Rico, May 24-28, 2009.
African Development Bank (AfDB), World Bank, Economic Development Institute (EDI), International Fund for Agricultural Development (IFAD), Management Systems International (MSI)
Format:
Manual
Publication Date:
1985-07
Published:
Africa
Location:
Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 132 Document Number: C19932
African Development Bank (AfDB), World Bank, Economic Development Institute (EDI), International Fund for Agricultural Development (IFAD), Management Systems International (MSI)
Format:
Manual
Publication Date:
1985-07
Published:
Africa
Location:
Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 132 Document Number: C19933
African Development Bank (AfDB), World Bank, Economic Development Institute (EDI), International Fund for Agricultural Development (IFAD), Management Systems International (MSI)
Format:
Manual
Publication Date:
1985-07
Published:
Africa
Location:
Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 132 Document Number: C19934
African Development Bank (AfDB), World Bank, Economic Development Institute (EDI), International Fund for Agricultural Development (IFAD), Management Systems International (MSI)
Format:
Manual
Publication Date:
1985-07
Published:
Africa
Location:
Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 132 Document Number: C19935
African Development Bank (AfDB), World Bank, Economic Development Institute (EDI), International Fund for Agricultural Development (IFAD), Management Systems International (MSI)
Format:
Manual
Publication Date:
1985-07
Published:
Africa
Location:
Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 132 Document Number: C19936
African Development Bank (AfDB), World Bank, Economic Development Institute (EDI), International Fund for Agricultural Development (IFAD), Management Systems International (MSI)
Format:
Manual
Publication Date:
1985-07
Published:
Africa
Location:
Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 132 Document Number: C19937
Findings suggest that the contribution of agricultural extension services to India's food production can be claimed to the extent of 64.20 percent especially in the Punjab where this study was conducted with 500 farmers. Agricultural information services accounted for 8.59 percent of impact (increased farm production) on 60.17 percent of farmers. Knowledge gains through publicity and training camps accounted for 8.75 percent of impact on 61.24 percent of farmers.
Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 182 Document Number: C36984
Notes:
5 pages., Describes process and outcomes of a four-day workshop in Bangladesh involving representatives of several organizations that have been actively involved in the farmer-led approach.
Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 182 Document Number: C36962
Notes:
9 pages., Describes outcomes of two workshops aimed at documenting and analyzing the experiences gained in building multi-stakeholder partnership in implementing 12 DURAS-funded projects.
Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 182 Document Number: C36985
Notes:
5 pages., Describes process and outcomes of a four-day workshop in Orissa, India, involving representatives of several organizations that have been actively involved in the farmer-led approach.
Agricultural Communications faculty (author / University of Illinois)
Format:
Project files
Publication Date:
1982-01-01
Published:
Pakistan: Office of Agricultural Communications, College of Agriculture, University of Illinois, Urbana
Location:
Agricultural Communications Documentation Center, Funk Library, University of Illinois Document Number: D10034
Notes:
The project file is maintained in records of the Agricultural Communications Program, University of Illinois > "International" section > "Pakistan - TIPAN" file folder., This project file describes formation and early activities of the Office of Agricultural Communications, College of Agriculture, University of Illinois participation in the Northwest Frontier Province in Pakistan. This $15.2 million project, funded by the U.S. Agency for International Development, was a collaborative effort with the Northwest Frontier Province Agricultural University. Agricultural communications faculty and staff members were involved in several initiatives, including development of courses and curricula, a learning resources center, and a continuing education center.
Ghana: Association for International Agricultural and Extension Education
Location:
Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 132 Document Number: C19952
Notes:
Burton Swanson Collection, from "Proceedings seventh annual meeting of the assocation for international agricultural and extension education"Riverfront Holiday Inn, St. Louis, Missouri, March 28-30, 1991
Agunga, Robert (author), Zinnah, M.M. (author), Annor-Frempong, Festus (author), Kwarteng, Joseph (author), and Association for International Agricultural and Extension Education (AIAEE).
Format:
Paper
Publication Date:
2006-05-14
Published:
Ghana
Location:
Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 150 Document Number: C24249
Notes:
Retrieved June 16, 2006, Pages 36-46 in proceedings of the AIAEE conference in Clearwater Beach, Florida, May 14-17, 2006.
Agunga, Robert A. (author / Ohio State University), Kimball, Mary (author), and Association for International Agricultural and Extension Education
Format:
conference papers
Publication Date:
1997-03-04
Published:
Zambia
Location:
Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 133 Document Number: C20296
Notes:
Burton Swanson Collection, Section I; from "1997 conference papers : Association for International Agricultural and Extension Education", 13th Annual Conference, 3, 4, 5 April 1997, Arlington, Virginia
Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 116 Document Number: C11768
Notes:
Francis C. Byrnes Collection, Proceedings of the 13th annual conference of the Association for International Agricultural and Extension Education, Arlington, Virginia, April 3-5, 1997.
14 pages., via online journal., This study sought to identify the information communication technology (ICT) needs of small-scale farmers in Anambra State, Nigeria. A structured interview schedule was used to collect data from a sample of 108 farmers. Results revealed that the majority used radio and television and owned mobile phones and video machines. Constraints to use included capacity, infrastructural/technical and logistical problems. The study recommends that the Nigerian government reorient its policies in order to harness the potential of ICTs to contribute to agricultural development and highlights the need to raise awareness of the agricultural uses of ICTs among the government, other national stakeholders, and rural communities.
10 pages, The main objectives of this research are to assess the educational and training requirements of farmers in Al-Ta’mim governorate in the field of using and maintaining the center pivot sprinkler irrigation systems and identifying the differences between these requirements according to some independent factors. The research sample consisted of 142 farmers representing 60% of the total number of farmers who were using these systems. The data was collected through a questionnaire form and utilizing the Borich equation. After testing the validity and reliability of the questionnaire, the data acquisition commenced through personal interview, the data then were analyzed by using analysis of variance and step-wise regression analysis. The results showed that 94% of farmers require medium to high levels of education and training and that there are significant differences in these requirements according to: educational level, number of months of utilizing the system, annual income, size of holding, and communication level with information sources. Yet, there are no significant differences according to readiness to change and social norms. It is also found that the (number of months of utilizing the system) is the most contributing factor in the interpretation of the variance of the educational and training requirements.
22 pages, The objective of this study was to provide a comprehensive overview of the recent advancements in the use of deep learning (DL) in the agricultural sector. The author conducted a review of studies published between 2016 and 2022 to highlight the various applications of DL in agriculture, which include counting fruits, managing water, crop management, soil management, weed detection, seed classification, yield prediction, disease detection, and harvesting. The author found that DL’s ability to learn from large datasets has great promise for the transformation of the agriculture industry, but there are challenges, such as the difficulty of compiling datasets, the cost of computational power, and the shortage of DL experts. The author aimed to address these challenges by presenting his survey as a resource for future research and development regarding the use of DL in agriculture.
Albrecht, Hartmut (author), Hoffmann, Volker (author), Bergmann, Herbert (author), Diederich, Georg (author), Grober, Eberhard (author), Keller, Peter (author), Payr, Gerhard (author), and Sulzer, Rolf (author)
Alders, Carine (author), Haverkort, Bertus (author), and van Veldhuizen, Laurens (author)
Format:
Book chapter
Publication Date:
1993
Published:
International
Location:
Agricultural Communications Documentation Center, Funk Library, University of Illinois Document Number: C17244
Notes:
Pages 3-23 in Carine Alders, Bertus Haverkort and Laurens van Veldhuizen (eds.), Linking with farmers: networking for low-external-input and sustainable agriculture. Intermediate Technology Publications, London, UK. 298 pages.
Alders, Carine (author) and Hiemstra, Wim (author)
Format:
Book chapter
Publication Date:
1993
Published:
International
Location:
Agricultural Communications Documentation Center, Funk Library, University of Illinois Document Number: C17263
Notes:
Pages 259-270 in Carine Alders, Bertus Haverkort and Laurens van Veldhuizen (eds.), Linking with farmers: networking for low-external-input and sustainable agriculture. Intermediate Technology Publications, London, UK. 298 pages., Case report about the organization and functions of the Information Center on Low-external-input Agriculture (ILEIA) funded by the Dutch Ministry of Development Cooperation.
Aldosari, Fahad (author), Al Shunaifi, Mohamed Saleh (author), Ullah, Muhammad Amjad (author), Muddassir, Muhammad (author), and Noor, Mehmood Ali (author)
Format:
Online journal article
Publication Date:
2019-04
Published:
Saudi Arabia: Science Direct
Location:
Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 8 Document Number: D10318
7 pages., Via online journal., Like many developing countries, agriculture is seen as the vehicle for development also in Pakistan. Our study was aimed to identify the perceptions of farmer community towards the electronic media and relationship between different demographic characteristics of respondents with the use of electronic communication of TV and radio, in Khyber Pakhtunkhwa (KPK), a province of Pakistan. Random sampling technique was used for selecting 183 respondents. Data were analyzed with descriptive statistics and Chi-square. Results revealed that maximum respondents were agreed that mobile and internet can be a useful source of agricultural information and only 1.6 and 5.5% of the respondents were strongly disagreed about information means, respectively. A maximum number of the respondents were undecided about “agricultural helpline can be a useful source of agricultural information”, only 14.2% of the respondents were strongly agreed with this statement. A highly significant relationship was found between age of respondents and application of information received through radio and TV. On the other side, education of the respondents had a highly significant relationship with the application of information received through radio only. Farming experience of the respondents had no significant relationship with the application of information received through TV and radio. Results suggested that extension personnel should motivate and educate the farming community about the use of electronic media (TV, radio, helpline, internet, mobile) for advanced information about agriculture production techniques.
Agricultural Communications Documentation Center, Funk Library, University of Illinois Document Number: C17255
Notes:
Pages 159-165 in Carine Alders, Bertus Haverkort and Laurens van Veldhuizen (eds.), Linking with farmers: networking for low-external-input and sustainable agriculture. Intermediate Technology Publications, London, UK. 298 pages.
20 pages., via online journal, This study analyses the influences of sociodemographic factors, business orientation of farmers, and farm characteristics on adoption of ICT-based information through primary data collected from 461 farmers in eight districts of Uttar Pradesh, India. A personal interview survey was conducted using a pre-tested structured questionnaire. The Poisson Count Regression Model was used to analyze the factors influencing use of the information derived through ICT-based systems on various agricultural practices. The findings indicate that education, income, and social category of farmers are important sociodemographic factors affecting the adoption of ICT-based information systems. Similarly, farmers who consider farming as a business venture, practice a diversified cropping system, and have small farms are more likely to use ICT-based information.
Alison, Kathleen I. (author) and Werge, R. (author)
Format:
Unpublished report
Publication Date:
1984
Published:
USA
Location:
Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 51 Document Number: C00541
Notes:
AgComm Teaching, Washington, D.C.: International Training Division, Office of International Cooperation and Development, U.S. Dept. of Agriculture, 12pp. + Apx. photocopy
Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: Byrnes2 Document Number: C12352
Notes:
Francis C. Byrnes Collection, Pages 815-825 in Borton, Raymond E. (ed.), Selected readings to accompany getting agriculture moving. Volume 2. Agricultural Development Council, New York, NY. 526 p.
Allen, Samuel C. (author), Newman, Michael E. (author), and Association for International Agricultural and Extension Education
Format:
conference papers
Publication Date:
1997-03-04
Location:
Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 133 Document Number: C20299
Notes:
Burton Swanson Collection, Section I; from "1997 conference papers : Association for International Agricultural and Extension Education", 13th Annual Conference, 3, 4, 5 April 1997, Arlington, Virginia
Allen, Samuel C. (author) and Newman, Michael E. (author)
Format:
Paper
Publication Date:
1997-04
Published:
USA
Location:
Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 116 Document Number: C11784
Notes:
Francis C. Byrnes Collection, Proceedings of the 13th annual conference of the Association for International Agricultural and Extension Education, Arlington, Virginia, April 3-5, 1997.
cited reference, In many developing nations pesticides are indiscriminately sold without health warnings. Few farmers properly use the chemicals, resulting in poisoning and a growing number of related deaths. Some developing nations are even producing their own pesticides. Governments needs to control pesticides, and manufacturers need to adhere to ethical rules when dealing with developing nations. Environmental and health risk information must be available, and national organizations should be formed to promote safeguards.
Agricultural Communications Documentation Center, Funk Library, University of Illinois Document Number: D02158
Notes:
Pages 43-61 in Blessing M. Maumbe (ed.), E-agriculture and e-government for global policy development: implications and future directions. Information Science Reference, Hershey, Pennsylvania. 321 pages.
Altieri, Miguel A. (author) and Yurjevic, Andres (author)
Format:
Book chapter
Publication Date:
1995
Published:
International
Location:
Agricultural Communications Documentation Center, Funk Library, University of Illinois Document Number: C35812
Notes:
Pages 458-463 in D. Michael Warren, L. Jan Slikkerveer and David Brokensha (eds.), The cultural dimension of development: indigenous knowledge systems. Intermediate Technology Publications Ltd., London, England. 582 pages.
This editorial is maintained in the office of the Agricultural Communications Program, University of Illinois > "International" section > "Philippines CARD Group" file folder., Discusses why multi-media campaigns for corn, vegetables, and fish have not enjoyed success matching that of the widely-cited media campaign which the Philippine Ministry of
Agriculture staged for rice (Masagna 99). Calls for research.
Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 7 Document Number: D09983
Notes:
This conference report and accompanying materials are maintained in ACDC storage., Project file from the International section of the Agricultural Communications Program, University of Illinois at Urbana-Champaign., This is the report of an international workshop involving 16 Latin American and Caribbean countries at Cali, Colombia, April 14-18, 1986. Examines needs and potentials for strengthening communications linkages among national and international agricultural research organizations organizations serving that region. File includes abstracts in English as well as correspondence about some follow-up activities.
Agricultural Communications Documentation Center, Funk Library, University of Illinois Document Number: D02003
Notes:
279 pages., Papers presented at the UGC/SAP National Seminar on Agricultural Communication and Sustainable Development at Kolhapur, India, February 25-27, 2008.
Amenumey, Felix K. (author), Greiman, Bradley C. (author), and Association for International Agricultural and Extension Education
Format:
Paper
Publication Date:
2009-05
Published:
Ghana
Location:
Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 185 Document Number: D00437
Notes:
Pages 37-43 in the proceedings of the 25th annual meeting of the Association for International Agricultural and Extension Education in San Juan, Puerto Rico, May 24-28, 2009.
Amt, William (author / Program Assistant, Clearinghouse on Development Communication, Washington, D.C.) and Program Assistant, Clearinghouse on Development Communication, Washington, D.C.
Format:
Journal article
Publication Date:
1986
Published:
USA
Location:
Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 79 Document Number: C04475
Amudavi, David M. (author), Lawver, David E. (author), Udoto, M. (author), and Association for International Agricultural and Extension Education
Format:
Abstract
Publication Date:
2010-05
Published:
Kenya
Location:
Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 185 Document Number: D00420
Notes:
Abstract of article in the proceedings of the 26th annual meeting of the Association for International Agricultural and Extension Education in Saskatoon, Saskatchewan, Canada, May 16-19, 2010.
Anderson, H. Calvert (author / Inter-American Popular Information Program, American International Association), Vieira, Phil (author / Farm broadcaster, West Indies), Appiah, Ofosu (author / Radio Ghana), and Jain, G.P. (author / Sevagram, Delhi, India)
Format:
Panel report
Publication Date:
1967-06
Published:
International: First International Congress of Farm Writers.
Location:
Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 73 Document Number: D10794
Notes:
Item located in Document 10786. Claude W. Gifford Collection. Beyond his materials in the ACDC collection, the Claude W. Gifford Papers, 1919-2004, are deposited in the University of Illinois Archives. Serial Number 8/3/81. Locate finding aid at https://archives.library.illinois.edu/archon/, Pages 78-86 in J.S. Cram (ed.), Proceedings of the first International Congress of Farm Writers at Macdonald College, Quebec, Canada, June 18-21, 1967. 112 pages.
Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 44 Document Number: B05415
Notes:
; see also B05411, Theodore Hutchcroft Collection, San Jose, Costa Rica: Interamerican Institute of Agricultural Sciences of the OAS, 1968. 125 p. (Miscellaneous Series no. 54)
Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 163 Document Number: C26957
Notes:
Background paper for the World Development Report 2008 by the World Bank and affiliated organizations. 44 pages., A background paper for "Innovating through science and technology," Chapter 7 of the World Development Report 2008.
Annor-Frempong, Festus (author / University of Cape Coast, Ghana), Zinnah, Moses M (author / University of Cape Coast, Ghana), and Osei-Owusu, Alfred (author / University of Cape Coast, Ghana)
Format:
Proceedings
Publication Date:
2000-03-29
Published:
Ghana: Association for International Agricultural and Extension Education
Location:
Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 133 Document Number: C20248
Notes:
Burton Swanson Collection, In section J of the "2000 conference proceedings: Association for International Agricultural and Extension Education", 16th Annual Conference, March 29th-April 1st, 2000, Arlington, Virginia, USA
Agricultural Communications Documentation Center, Funk Library, University of Illinois Document Number: C23330
Notes:
Pages 229-247 in Cees J. Hamelink and Olga Linne (eds.), Mass communication research: on problems and policies. The art of asking the right questions. Ablex Publishing Corporation, Norwood, New Jersey. 417 pages.
Antony, T.V. (author / Indian Administrative Service, Madras, India) and Indian Administrative Service, Madras, India
Format:
Conference paper
Publication Date:
1974
Published:
USA
Location:
Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 31 Document Number: B03092
Notes:
Mason E. Miller Collection; Theodore Hutchcroft Collection, In: Communication strategies for rural development : proceedings of the Cornell-CIAT International Symposium; 1974 March 17-22; Cali, Colombia, S.A. Ithaca, NY : Cornell University, 1974. p. 106-116