Public Domain Mark
You can use this work for any purpose without restriction under copyright law. Read more about this licence.
Credit
Die Idee der Riemannschen Fläche. Public Domain Mark. Source: Wellcome Collection.
Provider
This material has been provided by the Gerstein Science Information Centre at the University of Toronto, through the Medical Heritage Library. The original may be consulted at the Gerstein Science Information Centre, University of Toronto.