Freeman Bibliographical Database
| Identifier: | F620 |
| Date: | 1972 |
| Concise reference: | Darwin, C. R. 1972. The origin of species by means of natural selection, or the preservation of favoured races in the struggle for life. Harmondsworth: Penguin Books. |
| Detailed reference: | 620. 1972 Harmondsworth, Penguin Books. As F617. |