@misc{Migoń_Piotr_Gorge-like_1999,
 author={Migoń, Piotr},
 volume={55},
 number={2},
 copyright={Creative Commons Attribution BY 3.0 PL license},
 journal={Let's protect Our Indigenous Nature},
 address={Kraków},
 howpublished={online},
 year={1999},
 publisher={Institute of Nature Conservation of the Polish Academy of Sciences},
 language={pol},
 title={Gorge-like valleys in the Chełmy Landscape Park},
 type={Text},
 URL={http://rcin.org.pl/Content/105249/PDF/KR038_109874_r1999-t55-no2_ChPO-Migon-91-99.pdf},
 keywords={geology, inanimate nature conservation, Chełmy Landscape Park, Kaczawa Upland, Western Sudetes},
}