@misc{Sawicki_Ludwik_(1893–1972)_Piaski, author={Sawicki, Ludwik (1893–1972)}, volume={53}, copyright={Creative Commons Attribution BY 3.0 PL license}, journal={Spuścizna prof. Ludwika Sawickiego : teczki archiwalne}, howpublished={online}, language={pol}, title={Piaski}, type={Text}, URL={http://www.rcin.org.pl/iae/Content/77282/PDF/WA308_90669_A-TA-LS-53-53_Piaski_I.pdf}, keywords={archaeological sites -- Poland, Piaski, voivodeship mazowieckie (Poland)}, }