@misc{_Pila_[ca,
 copyright={Public Domain},
 address={[S.l.]},
 howpublished={online},
 year={[ca 1972-1981]},
 publisher={[s.n.]},
 language={rus},
 title={Pila : Pol'ša},
 type={Image},
 URL={http://rcin.org.pl/Content/211265/PDF/WA51_180214_PAND22680-r1972_Pila-Pol-sa.pdf},
 keywords={topographic maps, military maps, street maps, military topography, Piła},
}