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Google圖書搜尋
Adaption of the Training and Visit Extension System to Changing Socio-cultural and Agro-ecological Conditions
Abraham Blum
出版
Hayim Gvati Chair in Agricultural Extension, the Hebrew University of Jerusalem, Faculty of Agriculture.
, 1990
URL
http://books.google.com.hk/books?id=c98IuAAACAAJ&hl=&source=gbs_api