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A Reconnaissance-level Evaluation of Soil Conservation Programs and Methods in the Kingdom of Lesotho

Colorado State University Evaluation TeamDavid William SecklerKenneth C. NobeRonald A. Wykstra

出版	Department of Economics, Colorado State University, 1978
URL	http://books.google.com.hk/books?id=41dBAAAAIAAJ&hl=&source=gbs_api