@misc{Ducoudray_Gustave_(1838-1906)_Historya,
 author={Ducoudray, Gustave (1838-1906)},
 howpublished={online},
 publisher={Warszawa : Red. „Niwy”},
 language={pol},
 type={książka},
 title={Historya cywilizacyi powszechney T.3-4},
 keywords={Europa - kultura -12-19 w.},
}