M. Sc. E. Sofianska, essor Dr. K. Michailidis. ENVIRONMENTAL IMPACT OF A LARGE-SCALE MANGANESE MINING ACTIVITY IN DRAMA DISTRICT, MACEDONIA, NORTHERN GREECE. SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 13th SGEM GeoConference on ECOLOGY, ECONOMICS, EDUCATION AND LEGISLATION, 2013, pp. 393 - 400 pp. https://doi.org/10.5593/sgem2013/be5.v1/s20.052