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Google圖書搜尋
Economic Appraisal of Irrigation Systems for the Green River Basin Wyoming
Richard James Taggart
Douglas E. Agee
R. T. Clark
出版
Agricultural Extension Service, University of Wyoming
, 1971
URL
http://books.google.com.hk/books?id=h14pAQAAMAAJ&hl=&source=gbs_api
