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[文献書誌] Amano, M., et al.: "Morphometric comparison of skulls of seals of the subgenus Pusa. 2000. Lake Baikal (ed.K.Minoura)"Elsevier. 322. 315-323 (2000)
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[文献書誌] Miyazaki, N.: "A review of studies on the ringed, Caspian and Baikal seals (Pusa hispida, P.caspica, and P.sibirica)"Otsuchi Marine Science. 26. 1-6 (2000)
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[文献書誌] Miyazaki, N.: "A review of biological and environmental study on Caspian seals (Pusa caspica)"International Science and Industrial Forum. General Report May 14-19, 2001. Nizhny Novgorod, Russia. Vol.2. (2001)
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[文献書誌] Ohashi Kenjiro, et al.: "Seroepidemiological survey of distemper virus infection in the Caspian Sea and in Lake Baikal"Veterinary microbiology. 82. 203-210 (2001)
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[文献書誌] Tsutsui, S., et al.: "Pacific white-sided dolphins (Lagenorhynchus obliquidens) with anomalous colour patterns in Volcano Bay, Hokkaido, Japan"Aquatic Mammals. 27(2). 172-182 (2001)
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[文献書誌] 宮崎 信之: "バイカル湖の生物多様性と環境-バイカルアザラシから地球環境の水汚染を考える"地球環境. 6(1). 79-86 (2001)