@misc{Szupryczyński_Jan_Spitsbergen−_2024, author={Szupryczyński, Jan}, copyright={Creative Commons Attribution BY 4.0 license}, address={Warszawa}, howpublished={online}, year={2024}, publisher={IGiPZ PAN}, language={pol}, type={Text}, title={Spitsbergen− historia odkryć i badań do końca XX wieku.}, URL={http://rcin.org.pl/igipz/Content/241467/WA51_277761_r2024_Spitsbergen-histori.pdf}, }