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:
Rheticus. en Frontpage of Rheticus's book Canon Doctrinae Triangulorum ca Portada del Canon Doctrinae Triangulorum de Rheticus books google Georg Joachim Rheticus File Rheticus Canon doctrinae triangulorum Custom marker PDold Uploaded with Mathematics books book covers single pages etc books Georg Joachim Rheticus