@misc{Schabenbeck_Henryk_(1886–1939)._Fotograf_Marian_[ca,
 author={Schabenbeck, Henryk (1886–1939). Fotograf},
 editor={Kobylański, Józef Władysław (1893–1971). Collector},
 copyright={Public Domain},
 howpublished={online},
 year={[ca 1930]},
 title={Marian Adam Liberak},
 type={Image},
 URL={http://rcin.org.pl/Content/115363/PDF/WA058_97942_Liberak_Marian.pdf},
 keywords={Liberak, Marian Adam (1890-1931), foresters, naturalists, environmental activists, citizen activists, collectors and collecting, journalists},
}