Freeman Bibliographical Database
| Identifier: | F1964 |
| Date: | 1974 |
| Concise reference: | Barrett, Paul H. 1974. The Sedgwick-Darwin geologic tour of North Wales. Proceedings of the American Philosophical Society 118 (2) (19 April): 146-164. |
| Identifier: | F1964 |
| Date: | 1974 |
| Concise reference: | Barrett, Paul H. 1974. The Sedgwick-Darwin geologic tour of North Wales. Proceedings of the American Philosophical Society 118 (2) (19 April): 146-164. |