@misc{Łajczak_Adam_The_2000,
 author={Łajczak, Adam},
 volume={56},
 number={5},
 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 Polish Academy of Sciences},
 language={pol},
 title={The endangerment and conservation of mineral sources in Ponidzie as exemplified by the Owczary Nature Reserve},
 type={Text},
 URL={http://rcin.org.pl/iop/Content/70521/PDF/KR038_90081_r2000-t56-no5_ChPO-Lajczak-43-76.pdf},
 keywords={Owczary - nature reserve, Nida Basin (Poland), mineral source},
}