@misc{_Geographia_1975, copyright={Rights Reserved - Free Access}, address={Warszawa}, journal={Geographia Polonica}, howpublished={online}, year={1975}, publisher={IGiPZ PAN}, language={eng}, title={Geographia Polonica 31 (1975)}, type={Text}, URL={http://www.rcin.org.pl/igipz/Content/4227/PDF/Wa51_13446_r1975-t31_Geogr-Polonica.pdf}, keywords={Geography}, }