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1
Phosphorous nutrition of grain legumes in the semi-arid tropics /
Patancheru, Andhra Pradesh, India : International Crops Research Institute for the Semi-Arid Tropics, 1991

Book
2
Toward sustainability : a plan for collaborative research on agriculture and natural resource management /
Washington, D.C. : National Academy Press, 1991

Conference Proceeding Book
3
Sustainable agriculture research and education in the field : a proceedings /
Washington, D.C. : National Academy Press, 1991

Book
4
Soils on a warmer earth : effects of expected climate change on soil processes, with emphasis on the tropics and sub-tropics /
Amsterdam ; New York : New York, NY, U.S.A. : Elsevier ; Distributors for the U.S. and Canada, Elsevier Science Pub. Co., 1990

Conference Proceeding Book
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