@misc{Dombrowski_Andrzej_Znaczenie_1993,
 author={Dombrowski, Andrzej and Chmielewski, Sławomir and Rzępała, Mirosław},
 editor={Polish Academy of Sciences. Committee for Nature Conservation},
 copyright={Creative Commons Attribution BY 3.0 PL license},
 address={Kraków},
 howpublished={online},
 year={1993},
 publisher={Institute of Nature Conservation of the Polish Academy of Sciences},
 language={pol},
 title={Znaczenie dolin dorzecza Wisły Środkowej dla awifauny, zagrożenia i postulaty ochronne},
 title={River valleys of the middle Vistula basin: importance for birds, threats and conservation measures},
 type={Text},
 URL={http://www.rcin.org.pl/Content/117130/PDF/KR038_135116_r1993_OchrPiS-Dombrowski-203-224.pdf},
 keywords={river valleys},
}