@misc{Biermann_Georg_(1880-1949)_Heinrich,
 author={Biermann, Georg (1880-1949)},
 address={Bielefeld},
 address={Leipzig},
 howpublished={online},
 publisher={Velhagen & Klasing},
 language={ger},
 type={książka},
 title={Heinrich v. Zügel},
 keywords={Malarstwo -- Niemcy -- 19 w},
}