This is a scanned site of "Schwere, Elektricität und Magnetismus", published by <b><a href="//commons.wikimedia.org/wiki/Bernhard_Riemann" class="mw-redirect" title="Bernhard Riemann">Bernhard Riemann</a></b>. He has died on July the 20th, 1866 in Selasca at Lago Maggiore, what makes his puiblications public domain.
Bernhard Riemann
This is a scanned page of "Schwere, Elektricität und Magnetismus", published by Bernhard Riemann.