Freeman Bibliographical Database
| Identifier: | F1657a |
| Date: | 1841 |
| Concise reference: | Darwin, C. R. 1841. On the distribution of the erratic boulders and on the contemporaneous unstratified deposits of South America. The London, Edinburgh and Dublin Philosophical Magazine and Journal of Science, Third Series 19: 536-541. Reprint of F1657. |
| Detailed reference: | J. David Archibald 2011. |