@misc{_N_[1944],
 copyright={Public Domain},
 address={Gotha},
 journal={Vogels Karte von Mitteleuropa. Fliegerkarte},
 howpublished={online},
 year={[1944]},
 publisher={Justus Perthes},
 language={ger},
 type={Image},
 title={N 34- SW Warschau-West},
 URL={http://rcin.org.pl/igipz/Content/210103/PDF/WA51_190990_PTGC61-10-r1944_N-34-SW-Warschau-We_0001.pdf},
 keywords={topographic maps, aerial maps, Central-Western Poland},
}