Applications of Systems Approaches at the Farm and Regional Levels: Proceedings of the Second International Symposium on Systems Approaches for Agricultural Development, held at IRRI, Los Banos, Philippines, 6–8 December 1995

Applications of Systems Approaches at the Field Level: Volume 2: Proceedings of the Second International Symposium on Systems Approaches for Agricultural Development, held at IRRI, Los Baños, Philippines, 6–8 December 1995