@misc{_N_[1944], copyright={Public Domain}, address={Gotha}, journal={Vogels Karte von Mitteleuropa. Fliegerkarte}, howpublished={online}, year={[1944]}, publisher={Justus Perthes}, language={ger}, title={N 34 - NW Danzig}, type={Image}, URL={http://www.rcin.org.pl/igipz/Content/210099/PDF/WA51_190800_PTGC61-5-r1944_N-34-NW-Danzig_0001.pdf}, keywords={topographic maps, aerial maps, GdaƄsk Pomerania, Kaliningrad (Russia; region)}, }