Freeman Bibliographical Database
| Identifier: | F3239 |
| Date: | 2007 |
| Concise reference: | Darwin, C. R. 2007. The formation of vegetable mould, through the action of worms, with observations on their habits. Echo Library. |
| Identifier: | F3239 |
| Date: | 2007 |
| Concise reference: | Darwin, C. R. 2007. The formation of vegetable mould, through the action of worms, with observations on their habits. Echo Library. |