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Aerial and Ship-based Surveys of Steller Sea Lions (Eumetopias Jubatus) in Southeast Alaska, the Gulf of Alaska, and Aleutian Islands During June and July 1994

J. Michael StrickLowell W. FritzJ. P. Lewis

出版	U.S. Department of Commerce, National Oceanic and Atmospheric Administration, National Marine Fisheries Service, Alaska Fisheries Science Center, 1997
URL	http://books.google.com.hk/books?id=L3UeAQAAIAAJ&hl=&source=gbs_api