TY - CPAPER AU - Barbara Bielowicz AU - Sandra Pawelec AU - Natalia Maciejonczyk TI - SULPHUR IN POLISH LIGNITE DEPOSITS T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 17th International Multidisciplinary Scientific GeoConference SGEM2017, Science and Technologies in Geology, Exploration and Mining PY - 2017 SP - 557 EP - 564 DO - 10.5593/sgem2017/11/s01.070 PB - STEF92 Technology ER -