Freeman Bibliographical Database
| Identifier: | A6634 |
| Date: | 1857 |
| Concise reference: | Bates, Henry Walter. 1857. Notes on South American butterflies. [Read 7 September 1857.] Transactions of the Entomological Society of London n.s. 5 1-11. 'On non-crossing of varieties' [Darwin Pamphlet Collection 271][CCD10] |