Page 65-66 in Extension Circular 541, Review of Extension Research, January through December 1961, U.S. Department of Agriculture, Washington, D.C. Summary of thesis for the master of agriculture in rural sociology, Pennsylvania State University, University Park. 1961. 71 pages.
Agricultural Communications Documentation Center, Funk Library, University of Illinois Document Number: D01213
Notes:
Pages 325-330 in Waters-Bayer (eds.), Farmer innovation in Africa: a source of inspiration for agricultural development. Earthscan Publications, Ltd., London, England. 362 pages.
Pages 14-15 in Extension Circular 541, Review of Extension Research, January through December 1961, U.S. Department of Agriculture, Washington, D.C. Summary of a master's report for the master of education degree in extension education, Colorado State University, Ft. Collins. 1961. 115 pages.
