@misc{Tworek_Stanisław_Factors_2010,
 author={Tworek, Stanisław},
 volume={Nr 58},
 copyright={Creative Commons Attribution BY 3.0 PL license},
 journal={Studia Naturae},
 address={Kraków},
 howpublished={online},
 year={2010},
 publisher={Institute of Nature Conservation of the Polish Academy of Sciences},
 language={pol},
 title={Factors affecting the occurrence of breeding bird species in the agricultural landscape of southern Poland},
 type={Text},
 URL={http://rcin.org.pl./Content/183666/PDF/KR038_95210_r2010-t58_SN-Tworek-1-180.pdf},
 keywords={breeding birds - Poland, agricultural landscape, agriculture - environmental aspects},
}