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Google圖書搜尋
Acreage Supply Response
Rob Weaver
Bernard J. Morzuch
Peter G. Helmberger
其他書名
Spring Wheat in the Dakotas
出版
Center for Geographic Analysis, Institute for Environmental Studies, University of Wisconsin
, 1977
URL
http://books.google.com.hk/books?id=38kMAQAAMAAJ&hl=&source=gbs_api