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Rules and Regulations of Bureau of Entomology and Plant Quarantine ...
United States. Bureau of Entomology and Plant Quarantine
其他書名
Effective June 1, 1938
出版U.S. Government Printing Office, 1939
URLhttp://books.google.com.hk/books?id=KmabbP-6SL0C&hl=&source=gbs_api
EBookFULL_PUBLIC_DOMAIN