| Author: | Haeckel, Ernst, 1834-1919 |
| Subject: | QH, Biology, Evolution (Biology), Life -- Origin |
| Format: | Electronic text |
| Date issued: | 2014 |
| Language: | English |
| Publisher: | Project Gutenberg, |
| Rights: | Public domain in the USA. |
| Download link: | The Wonders of Life : A Popular Study of Biological Philosophy [electronic resource] / Ernst Haeckel |