Freeman Bibliographical Database
| Identifier: | A6329 |
| Date: | 1881 |
| Concise reference: | Wetherby, Albert Gallatin. 1881. On the geographical distribution of certain fresh water mollusks of North America, and the probable causes of their variation. Journal of the Cincinnati Society of Natural History 3 (4) (January): 317-324; 4 (2) (July): 156-165. [Darwin Pamphlet Collection] |