Freeman Bibliographical Database
| Identifier: | A419 |
| Date: | 1902 |
| Concise reference: | Holst, Helge. 1902. Arternes Oprindelse III - Hvirveldyrene. Vor Jord (31). |
| Identifier: | A419 |
| Date: | 1902 |
| Concise reference: | Holst, Helge. 1902. Arternes Oprindelse III - Hvirveldyrene. Vor Jord (31). |