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Wiig, Ø., Gjertz, I., Griffiths, D. et al. Diving patterns of an Atlantic walrus Odobenus rosmarus rosmarus near Svalbard. Polar Biol 13, 71–72 (1993). https://doi.org/10.1007/BF00236586
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DOI: https://doi.org/10.1007/BF00236586