Darwin Online Manuscript Catalogue
| Identifier: | CUL-DAR41.73 |
| Date: | [Undated] |
| Name: | Darwin Charles Robert |
| Attributed title: | [Humboldt] `A geognostical essay on the superposition of rocks in both hemispheres' 222 |
| Document type: | Abstract |


| Identifier: | CUL-DAR41.73 |
| Date: | [Undated] |
| Name: | Darwin Charles Robert |
| Attributed title: | [Humboldt] `A geognostical essay on the superposition of rocks in both hemispheres' 222 |
| Document type: | Abstract |