@misc{_Krystyna, copyright={Public Domain}, howpublished={online}, title={Krystyna Kowalska}, type={Image}, URL={http://www.rcin.org.pl/Content/105922/WA058_90968_Kowalska_K.pdf}, keywords={Kowalska, Krystyna (1915-1994), zoologists, zoology historians, science historian, biologists - Poland - biography}, }