Agricultural Communications Documentation Center, Funk Library, University of Illinois Box: 136 Document Number: C20811
Notes:
Burton Swanson Collection, from "Integrating multiple landuse for a sustainable future" 15th European Seminar on Extension and Education, Wageningen International Conference Centre, The Netherlands, August 27-31, 2001
Agricultural Communications Documentation Center, Funk Library, University of Illinois Document Number: D01200
Notes:
Pages 92-103 in Chris Reij and Ann Waters-Bayer (eds.), Farmer innovation in Africa: a source of inspiration for agricultural development. Earthscan Publications Ltd., London, England. 362 pages.