“Polar bear, (Ursus maritimus)” (PDF). U.S. Fish and Wildlife service. 2008年7月11日時点のオリジナルよりアーカイブ。2008年3月22日閲覧。 “Appearance. The polar bear is the largest member of the bear family, with the exception of the Alaska’s Kodiak brown bears, which equal polar bears in size.” (Overview page)
ecos.fws.gov
“Polar bear, (Ursus maritimus)” (PDF). U.S. Fish and Wildlife service. 2008年7月11日時点のオリジナルよりアーカイブ。2008年3月22日閲覧。 “Appearance. The polar bear is the largest member of the bear family, with the exception of the Alaska’s Kodiak brown bears, which equal polar bears in size.” (Overview page)
“Polar bear, (Ursus maritimus)” (PDF). U.S. Fish and Wildlife service. 2008年7月11日時点のオリジナルよりアーカイブ。2008年3月22日閲覧。 “Appearance. The polar bear is the largest member of the bear family, with the exception of the Alaska’s Kodiak brown bears, which equal polar bears in size.” (Overview page)
“Kodiak Bear Fact Sheet”. Alaska Department of Fish and Game, Division of Wildlife Conservation (2008年). 2008年10月27日閲覧。