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Average Harvest of Each Duck Species in States and Counties During 1966-1975 Hunting Seasons
Samuel M. Carney
Michael Sorenson
Elwood Martin
出版
U. S. Department of the Interior, Fish and Wildlife Service, Office of Migratory Bird Management
, 1978
URL
http://books.google.com.hk/books?id=WEIlAQAAMAAJ&hl=&source=gbs_api
EBook
FULL_PUBLIC_DOMAIN