| Author: | Bölsche, Wilhelm, 1861-1939 |
| Subject: | QH, Animal behavior, Plant ecology |
| Format: | Electronic text |
| Date issued: | 2015 |
| Language: | German |
| Publisher: | Project Gutenberg, |
| Rights: | Public domain in the USA. |
| Download link: | Schutz- und Trutzbündnisse in der Natur [electronic resource] / Wilhelm Bölsche |