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Google圖書搜尋
The Wheat Stem Sawfly and Its Control
United States. Bureau of Entomology and Plant Quarantine
出版
Bureau of Entomology and Plant Quarantine, Agricultural Research Administration, U.S. Department of Agriculture
, 1951
URL
http://books.google.com.hk/books?id=tm79tgAACAAJ&hl=&source=gbs_api