Freeman Bibliographical Database
| Identifier: | F591 |
| Date: | 1961 |
| Concise reference: | Darwin, C. R. 1961. The origin of species by means of natural selection, or the preservation of favoured races in the struggle for life. New York: F. Ungar. |
| Detailed reference: | 591. 1961 New York, F. Ungar. Fourth issue. As F578. |