Freeman Bibliographical Database
| Identifier: | F1371 |
| Date: | 1887 |
| Concise reference: | Darwin, C. R. 1887. The formation of vegetable mould, through the action of worms, with observations on their habits. New York: Humboldt Publishing Co. |
| Detailed reference: | 1371. 1887 New York, Humboldt Publishing Co. 95 pp. Extracts only. Library of Popular Science vol. 9, no. 92. Later undated issues. UT, 927(6). |