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Regulations Relating to Migratory Birds and Certain Game Mammals, 1937
United StatesUnited States. Bureau of Biological Survey
出版U.S. Department of Agriculture, Bureau of Biological Survey, 1937
URLhttp://books.google.com.hk/books?id=zUKxK8cgKX4C&hl=&source=gbs_api
EBookFULL_PUBLIC_DOMAIN