1. Science Under Scarcity: Principles and Practice for Agricultural Research Evaluation and Priority Setting;Alston,1995
2. Farmer participation in on-farm varietal trials;Ashby,1987
3. Resource-poor Farmer Participation in Research: A Synthesis of Experiences from Nine National Agricultural Research Systems;Biggs,1989
4. Managing Projects in Developing Countries,1993
5. Development and spread of high-yielding varieties of wheat and rice in the less developed nations;Dalrymple,1986