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An Optimization Model for Evaluating the Stability of Sole Cropping and Mixed Cropping Systems Under Changing Resource and Technology Levels

Olabisi Ogunfowora

出版	Institute for Agricultural Research, Samaru, Ahmadu Bello University, 1974
URL	http://books.google.com.hk/books?id=7nKCnQEACAAJ&hl=&source=gbs_api