Bibliography Record
| Heilmann, Gerhard | |||
| 1913 | Vor nuvaerende Viden om Fuglenes Afstamning. Første Afsnit. [What we know about the descent of birds. Part 1.] Dansk Ornith. For. Tidsskr. 7: 1-71. 50 figs. –Sirs., 58. | ||
Related Index Records
None Found
Bibliography and Index of the Sirenia and Desmostylia 
| Heilmann, Gerhard | |||
| 1913 | Vor nuvaerende Viden om Fuglenes Afstamning. Første Afsnit. [What we know about the descent of birds. Part 1.] Dansk Ornith. For. Tidsskr. 7: 1-71. 50 figs. –Sirs., 58. | ||
None Found