@misc{SzelÄ…gowski_Adam_(1873-1961)_Historja_1938, author={SzelÄ…gowski, Adam (1873-1961)}, address={Warszawa}, howpublished={online}, year={1938}, publisher={M. Arct}, title={Historja powszechna. T. 2, Cz. 2}, keywords={historia}, }