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Thewissen, J. G. M.; Cooper, Lisa Noelle; George, John C.; Bajpai, Sunil. From Land to Water: the Origin of Whales, Dolphins, and Porpoises. Evolution: Education and Outreach. 2009, 2 (2): 272–288. ISSN 1936-6426. S2CID 11583496. doi:10.1007/s12052-009-0135-2.
Thewissen, J. G. M.; Cooper, Lisa Noelle; George, John C.; Bajpai, Sunil. From Land to Water: the Origin of Whales, Dolphins, and Porpoises. Evolution: Education and Outreach. 2009, 2 (2): 272–288. ISSN 1936-6426. S2CID 11583496. doi:10.1007/s12052-009-0135-2.
Thewissen, J. G. M.; Cooper, Lisa Noelle; George, John C.; Bajpai, Sunil. From Land to Water: the Origin of Whales, Dolphins, and Porpoises. Evolution: Education and Outreach. 2009, 2 (2): 272–288. ISSN 1936-6426. S2CID 11583496. doi:10.1007/s12052-009-0135-2.