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18by Nishikawa, Jun, Sato, Katsufumi, Takahashi, Akinori, Naito, YasuhikoGet access
Published in Polar Biology (2000)
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19by Otani, Seiji, Naito, Yasuhiko, Kato, Akiko, Kawamura, AkitoGet access
Published in Marine Mammal Science (2000)
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20by Watanuki, Yutaka, Kato, Akiko, Mori, Yoshihisa, Naito, YasuhikoGet access
Published in The Journal of Animal Ecology (1993)
Article in Journal/Newspaper