@misc{Harms_Heinrich_(1861–1933)_Heimatatlas_[1926], author={Harms, Heinrich (1861–1933) and Ostpreussischer Lehrerverein and Wiechert, Otto. Oprac.}, copyright={Public Domain}, address={Leipzig}, howpublished={online}, year={[1926]}, publisher={List & von Bressensdorf Verlag}, language={ger}, title={Heimatatlas für Ost-Preussen}, keywords={geographical atlases, school atlases, East Prussia, 20th century}, }