This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Die Entwickelungsgeschichte der Kreuzotter Pelias berus Merr. Plate VII BHL. Die Entwickelungsgeschichte der Kreuzotter Pelias berus Merr bearbeitet von Emil Ballowitz Plate VII Illustration biodiversitylibrary org title Ballowitz Emil NOTINCOPYRIGHT Biodiversity Heritage Library PDold Die Entwickelungsgeschichte der Kreuzotter