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Google圖書搜尋
Control of the Fir Bark Louse
S. F. Potts
出版
U.S. Department of Agriculture, Forest Service, Bureau of Entomology and Plant Quarantine, Forest Insect Investigations
, 1935
URL
http://books.google.com.hk/books?id=MITNuQEACAAJ&hl=&source=gbs_api