Bibliography and Index of the Sirenia and Desmostylia 
Bibliography Record
| Gregory, William King | |||
| 1951 | Evolution emerging: A survey of changing patterns from primeval life to man. New York, Macmillan (2 vols.): Vol. 1: xxvi + 736 (text); Vol. 2: viii + 1013 (illustrations). –Sirs., 1: 426-428; 2: 800-803. | ||
Related Index Records
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