RICHARD ABEGG (1869–1910), Scientific research assistant of physics Professor Walther Nernst, date unknown (2nd half of the 19th century), Carte de Visite (back page), State and University Library of Göttingen, Voit Collection
RICHARD ABEGG (1869–1910), Scientific research assistant of physics Professor Walther Nernst, date unknown (2nd half of the 19th century), Carte de Visite (back page), State and University Library of Göttingen, Voit Collection