Freeman Bibliographical Database
| Identifier: | A6158 |
| Date: | 1871 |
| Concise reference: | Trippe, T. Martin. 1871. Some differences between western and eastern birds. American Naturalist 5: 632-636. [Darwin Pamphlet Collection] |
| Identifier: | A6158 |
| Date: | 1871 |
| Concise reference: | Trippe, T. Martin. 1871. Some differences between western and eastern birds. American Naturalist 5: 632-636. [Darwin Pamphlet Collection] |