Robert Machowski (2017). 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, 81-88. https://doi.org/10.5593/sgem2017/31/s12.011