Przemyslaw Bukowski. "CHANGES IN THE STRUCTURE OF WATER INFLOW INTO COAL MINES IN POLAND." SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 13th SGEM GeoConference on SCIENCE AND TECHNOLOGIES IN GEOLOGY, EXPLORATION AND MINING (2013). https://doi.org/10.5593/sgem2013/ba1.v2/s02.004