TY - CPAPER AU - Magdalena Tutak TI - COMPARATIVE ANALYSIS CONCERNING THE AMOUNT OF METHANE RELEASED INTO THE ATMOSPHERE AND COLLECTED BY HARD COAL MINES IN POLAND T2 - SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 18th SGEM International Multidisciplinary Scientific GeoConference SGEM2018, Energy and Clean Technologies PY - 2018 SP - 211 EP - 220 DO - 10.5593/sgem2018v/4.3/s06.026 PB - STEF92 Technology ER -