@misc{,
 copyright={Public Domain},
 address={Petrograd},
 howpublished={online},
 URL={http://www.rcin.org.pl/Content/99184/PDF/WA51_91606_PANC622-30-r1915_XXIX-10.pdf},
 keywords={Russian partition, Poland, Sandomierz (Poland), topographic maps, military maps},
}