Bibliography Record
| Koken, Ernst | |||
| 1893 | Die Vorwelt und ihre Entwickelungsgeschichte. Leipzig: viii + 636. 117 figs. 2 pls. Maps. –Sirs., 487. | ||
Related Index Records
None Found
Bibliography and Index of the Sirenia and Desmostylia 
| Koken, Ernst | |||
| 1893 | Die Vorwelt und ihre Entwickelungsgeschichte. Leipzig: viii + 636. 117 figs. 2 pls. Maps. –Sirs., 487. | ||
None Found