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Report of the chief of the Bureau of entomology and plant quarantine

United States. Bureau of Entomology and Plant Quarantine

出版	U.S. Dept. of Agriculture, Bureau of Entomology and Plant Quarantine, 1950
主題	Insect pestsInsectsPlant diseasesScience / Life Sciences / Zoology / Entomology
URL	http://books.google.com.hk/books?id=sxbOAAAAMAAJ&hl=&source=gbs_api