- Agricultural Development Council (2)
- Conference on Subsistence and Peasant Economics (1)
- East-West Center. Institute of Advanced Projects (1)
- Seminar on Trade, Agriculture, and Development, University of Chicago, 1973 (1)
- Tolley, George S., 1925- (1)
- Wharton, Clifton R., 1926- (1)
- Zadrozny, Peter A. (1)