Freeman Bibliographical Database
| Identifier: | F3237 |
| Date: | 1990 |
| Concise reference: | Darwin, C. R. 1990. The formation of vegetable mould, through the action of worms, with observations on their habits. New York University Press. |
| Identifier: | F3237 |
| Date: | 1990 |
| Concise reference: | Darwin, C. R. 1990. The formation of vegetable mould, through the action of worms, with observations on their habits. New York University Press. |