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.
Carl Weigert. en Carl Weigert pl Carl Weigert de Carl Weigert Frontispice to Carl Weigert Gesammelte Abhandlungen Berlin Springer anonymous public domain due to its age Carl Weigert PDold
Page 2023 Free-images.com. All images are Public Domain