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Progress Report on Eastern North Pacific Right Whale Research During July 1998

Wayne L. Perryman

出版	Southwest Fisheries Science Center, 1999
URL	http://books.google.com.hk/books?id=aZcmHQAACAAJ&hl=&source=gbs_api

註釋

Aerial survey of right whales in the Bering Sea near Bristol Bay took place July 7-19, 1998.