Robert Machowski. "CHANGES IN SPECIFIC ELECTROLYTIC CONDUCTIVITY OF WATER BODIES IN SUBSIDENCE BASINS IN THE SILESIAN UPLAND." SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 17th International Multidisciplinary Scientific GeoConference SGEM2017, Water Resources. Forest, Marine and Ocean Ecosystems (2017): 81-88. https://doi.org/10.5593/sgem2017/31/s12.011