@misc{Kowalczyk_Jan_Krzysztof_On_1996, author={Kowalczyk, Jan Krzysztof}, volume={52}, number={2}, copyright={Creative Commons Attribution BY 3.0 PL license}, address={Kraków}, journal={Let's protect Our Indigenous Nature}, howpublished={online}, year={1996}, publisher={Institute of Nature Conservation of the Polish Academy of Sciences}, language={pol}, type={Text}, title={On the protection of sites of forest insects in the green areas of Łódź}, URL={http://rcin.org.pl/Content/87882/PDF/KR038_107923_r1996-t52-no2_ChPO-Kowalczyk-106-108.pdf}, keywords={forest insects}, }