@misc{Knippel_Ernst_Wilhelm_(1811-1900)_Lubawka,
 author={Knippel, Ernst Wilhelm (1811-1900)},
 howpublished={online},
 language={ger},
 title={Lubawka},
 type={grafika},
 keywords={panorama gór, panorama Lubawki, Dolny Śląsk, Karkonosze, litografia, Lubawka},
}