1. Agroecology: The Scientific Basis of Alternative Agriculture;Altieri,1987
2. Testing the “Ecologically Noble Savage” hypothesis: interspecific prey choice by Piro Hunters of Amazonian Peru;Alvard;Human Ecology,1993
3. The effects of different types of farmers participation on the management of on-farm trials;Ashby;Agricultural Administration and Extension,1987
4. Sustainable Agriculture Research and Education in the Field;Benbrook,1991
5. Research by Farmers: The Importance of Informal Agricultural R and D Systems in Developing Countries;Biggs,1988