Ridgway, Sam H. Harrison, Richard J. (Richard John) 1920-1999 text bibliography enk London New York Academic Press c1981 1981 9999 monographic eng

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v. <1-6 > : ill. ; 23 cm. v. 1. The walrus, sea lions, fur seals, and sea otter -- v. 2. Seals -- v. 3. The sirenians and baleen whales -- v. 4. River dolphins and the larger toothed whales -- v. 5. The first book of dolphins -- v. 6. The second book of dolphins and the porpoises. edited by Sam H. Ridgway and Richard J. Harrison. Includes bibliographies and indexes. Marine mammals QL713.2 .H34 1981 599 H236 0125885016 (v. 1) 80042010 BD-DhUL 830805 20141230124554.0 3718339