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Google圖書搜尋
Farmers' Perceptions of and Preferences Concerning Agricultural Extension Programs
Ulrich Nitsch
出版
Swedish University of Agricultural Sciences, Department of Economics and Statistics
, 1982
ISBN
9157610606
9789157610607
URL
http://books.google.com.hk/books?id=w7S_AAAACAAJ&hl=&source=gbs_api