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1. Removing constraints to small farm production: The Caqueza Project.

by Zandstra, H. G.

Material type: book Book; Format: print Publisher: Ottawa : IDRC, 1976Availability: No items available

2. A methodology for on-farm cropping systems research / H.G. Zandstra, et`al.

by Zandstra, H. G.

Material type: book Book; Format: print Publisher: Manila, Philippines : International Rice Research Institute, 1981Availability: No items available