1.
 |  | Title: 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 decemb (System Approaches for Sustainable Agricultural Development, Vol 5) by Paul S. Teng, M. J. Kropff, H. F. M. Ten Berge, J. B. Dent, F. P. Lansigan, H. H. Van Laar, H.H. Van Laar, H.F.M. Ten Berge ISBN: 0792342852 Publisher: Kluwer Academic Publishers Pub. Date: February, 1997 List Price: $369.00 Amazon.com Price: $369.00 |
2.
 |  | Title: Modelling Crop-Weed Interactions by M. J. Kropff, H. H. Van Laar, Van Laar Kropff ISBN: 0851987451 Publisher: CABI Publishing, CAB International Pub. Date: January, 1997 List Price: $95.00 Amazon.com Price: $95.00 |
3.
 |  | Title: Applications of Systems Approaches at the Field Level: Proceedings of the Second International Symposium on Systems Approaches for Agricultural Development, Held at Irri, Los Banos, Philippines, 6-8 decemb (System Approaches for Sustainable Agricultural Development, Vol 6) by M. J. Kropff, P. S. Teng, P. K. Aggarwal, J. Bouma, B.A.M. Bouman, J. W. Jones, H. H. Van Laar ISBN: 0792342860 Publisher: Kluwer Academic Publishers Pub. Date: January, 1997 List Price: $321.00 Amazon.com Price: $321.00 |
4.
 |  | Title: Simulation and Systems Analysis for Rice Production (SARP): Selected Papers Presented at Workshops on Crop Simulation of a Network of National and International Agricultural Research Centres of Several Asian Countries and the Netherlands, 1990-1991 by F.W.T. Penning de Vries, H.H. van Laar, M.J. Kropff ISBN: 9022010597 Publisher: Backhuys Publishers Pub. Date: 30 October, 1991
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