Freeman Bibliographical Database
| Identifier: | F1352a |
| Date: | 1881 |
| Concise reference: | Darwin, C. R. 1881. [Letter to Frithiof Holmgren on vivisection, 15 April 1881], Darwin on vivisektionen. Helsingfors Dagblad, no. 114, (29 April): 3. |
| Identifier: | F1352a |
| Date: | 1881 |
| Concise reference: | Darwin, C. R. 1881. [Letter to Frithiof Holmgren on vivisection, 15 April 1881], Darwin on vivisektionen. Helsingfors Dagblad, no. 114, (29 April): 3. |