| Author: | Haeckel, Ernst, 1834-1919 |
| Subject: | QH, Evolution, Human beings -- Origin, Heredity |
| Format: | Electronic text |
| Date issued: | 2012 |
| Language: | English |
| Publisher: | Project Gutenberg, |
| Rights: | Public domain in the USA. |
| Download link: | The History of Creation, Vol. 2 (of 2) : Or the Development of the Earth and its Inhabitants by the Action of Natural Causes [electronic resource] / Ernst Haeckel |