@misc{_Marian, editor={Kobylański, Józef Władysław (1893–1971). Collector}, copyright={Public Domain}, howpublished={online}, type={Image}, title={Marian Adam Liberak}, URL={http://rcin.org.pl/miiz/Content/115083/PDF/WA058_97939_Liberak_Czuba.pdf}, keywords={Liberak, Marian Adam (1890-1931), naturalists, foresters, collectors and collecting, environmental activists, citizen activists, journalists}, }