@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 - SO Warschau - Ost},
 URL={http://www.rcin.org.pl/igipz/Content/210104/PDF/WA51_190992_PTGC61-11-r1944_N-34-SO-Warschau_0001.pdf},
 keywords={topographic maps, aerial maps, Central-Eastern Poland, Hrodna (Belarus; region), Brest (Belarus; region)},
}