- T. A. Jefferson, Thomas A. Jefferson, Stephen Leatherwood, Marc A. Webber, "Marine Mammals of the World: Species Identification Guide"
 - Food & Agriculture Organization of the United Nations | 1993 | ISBN: 9251032920 | 328 pages | PDF | 14,4 MB
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Marine Mammals of the World: Species Identification Guide
Labels: Animals related, Biology and Genetics