@misc{Krupa_Adam_Sites_2000,
 author={Krupa, Adam},
 volume={56},
 number={2},
 copyright={Creative Commons Attribution BY 3.0 PL license},
 journal={Let's protect Our Indigenous Nature},
 address={Kraków},
 howpublished={online},
 year={2000},
 publisher={Institute of Nature Conservation of the Polish Academy of Sciences},
 language={pol},
 title={Sites of ecological interest in the Nadwarciański (On the Warta River) Landscape Park},
 type={Text},
 URL={http://www.rcin.org.pl/Content/141477/PDF/KR038_167855_r2000-t56-no2_ChPO-Krupa-83-89.pdf},
 keywords={Nadwarciański Park Krajobrazowy},
}