| Author: | Hoppeler, Hans, 1879-1945 |
| Subject: | HQ, Sex instruction for children |
| Format: | Text |
| Date issued: | 2009 |
| Language: | German |
| Publisher: | Project Gutenberg, |
| Rights: | Public domain in the USA. |
| Download link: | Woher die Kindlein kommen [electronic resource] / Hans Hoppeler |