| Author: | Darwin, Charles, 1809-1882 |
| Subject: | QH, Variation (Biology), Domestic animals, Plants, Cultivated |
| Format: | Electronic text |
| Date issued: | 2008 |
| Language: | English |
| Publisher: | Project Gutenberg, |
| Rights: | Public domain in the USA. |
| Download link: | The Variation of Animals and Plants Under Domestication, Vol. I. [electronic resource] / Charles Darwin |