Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)
You can use this work for any purpose, as long as it is not primarily intended for or directed to commercial advantage or monetary compensation. You should also provide attribution to the original work, source and licence. Read more about this licence.
Credit
Vererbungen und Entwicklung : biologische Darlegungen über die Träger und Gesetze der Vererbung und Stammesgeschichte der Organismen unter besonderer Berücksichtigung des Menschen / von Hermann Muckermann. Attribution-NonCommercial 4.0 International (CC BY-NC 4.0). Source: Wellcome Collection.