Walrus biology and medicine
Walsh, M.T.; Asper, E.D.; Andrews, B.; Antrim, J.E. (1990). Walrus biology and medicine, in: Dierauf, L.A. CRC handbook of marine mammal medicine: health, disease, and rehabilitation. pp. 591-599
In: Dierauf, L.A. (Ed.) (1990). Handbook of marine mammal medicine: Health, disease, and rehabilitation. CRC Press: Boca Raton. ISBN 0-8493-2990-6. 733 pp., meer
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