@misc{Lesiński_Grzegorz_Barbastelle_1994, author={Lesiński, Grzegorz}, volume={50}, number={2}, copyright={Creative Commons Attribution BY 3.0 PL license}, address={Kraków}, journal={Let's protect Our Indigenous Nature}, howpublished={online}, year={1994}, publisher={Institute of Nature Conservation of the Polish Academy of Sciences}, language={pol}, type={Text}, title={Barbastelle Barbastella barbastellus in the Biebrza Valley}, URL={http://rcin.org.pl/iop/Content/89721/PDF/KR038_105391_r1994-t50-no2_ChPO-Lesinski-52-57.pdf}, keywords={barbastelle, Barbastella barbastellus, Chiroptera}, }