@misc{Mühlberger_J._Redaktor_Węgrów_1911,
 author={Mühlberger, J. Redaktor and Haun, L. Redaktor},
 copyright={Public Domain},
 address={[Wiedeń]},
 journal={Spezialkarte der österreichisch-ungarischen Monarchie 1:75.000},
 howpublished={online},
 year={1911},
 publisher={[wydawca nieznany]},
 language={ger},
 title={Węgrów : Zone E Col. XXVI},
 URL={http://www.rcin.org.pl/igipz/Content/152265/PDF/WA51_156363_PANC583-9-r1911_Wegrow-Zone-E-Col-.pdf},
 keywords={topographic maps, Węgrów region, Sokołów Podlaski region},
}