Polar session : Arctic natural environment research : Lublin - Poland, April 1991 - Charmas, Maria; Gnyp, Ewa; Filipowicz, Cezary, 1954-; Kosińska, Janina; Wawrzyczek, Józef; Jóźwik, Zbigniew, 1937- (Spitsbergen Geographical Expedition, 1991)