@misc{Geisler_Walter_(1891–1945)._Oprac._Oberschlesien-Atlas_1938, author={Geisler, Walter (1891–1945). Oprac.}, copyright={Public Domain}, address={Berlin}, howpublished={online}, year={1938}, publisher={Volk und Reich Verlag}, language={ger}, title={Oberschlesien-Atlas}, keywords={geographical atlases, regional atlases, Higher Silesia, 20th century}, }