| Author: | Bölsche, Wilhelm, 1861-1939 |
| Subject: | QH, Evolution (Biology) -- History, Haeckel, Ernst, 1834-1919 |
| Format: | Electronic text |
| Date issued: | 2023 |
| Language: | English |
| Publisher: | Project Gutenberg, |
| Rights: | Public domain in the USA. |
| Download link: | Haeckel : $b his life and work [electronic resource] / Wilhelm Bölsche |