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:
Bernhard Riemann Schwere Elektricitt und Magnetismus . This is scanned site of Schwere Elektricitt und Magnetismus published by Bernhard Riemann He has died on July the th in Selasca at Lago Maggiore what makes his puiblications public domain This is scanned page of Schwere Elektricitt und Magnetismus published by Bernhard Riemann