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An On-going Evaluation of the Planning, Implementation, and Tenancy (farm) Size of the Rahad Irrigation Project of the Sudan

Elsayed Ali Ahmed Zaki

出版	Thesis (Ph.D.) - Michigan State University. Department of Agricultural Economics, 1979
URL	http://books.google.com.hk/books?id=RYQjTOlsacgC&hl=&source=gbs_api