Proceedings of the International Symposium on Systems Approaches for Agricultural Development IRRI, L. B., Kropff, M. J., Teng, P. S., Aggarwal, P. K., Bouma, J., Bouman, B. A. M., . . . Laar, H. H. (1997). Applications of systems approaches at the field level. Volume 2 (1st edition.). Dordrecht, Países Bajos: Springer.

Proceedings of the International Symposium on Systems Approaches for Agricultural Development IRRI, Los Baños, M. J. Kropff, P. S. Teng, P. K. Aggarwal, J. Bouma, B. A. M. Bouman, J. W. Jones, and H. H. Laar. Applications of Systems Approaches At the Field Level. Volume 2. 1st edition. Dordrecht, Países Bajos: Springer, 1997.

Proceedings of the International Symposium on Systems Approaches for Agricultural Development IRRI, Los Baños, et al. Applications of Systems Approaches At the Field Level. Volume 2. 1st edition. Dordrecht, Países Bajos: Springer, 1997.