Sasa Rogan. GEOCHEMICAL MAP 1:1.000.000 OF WESTERN AND SOUTHERN PART OF SERBIA WITH THE ECOLOGICAL STATUS. SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 18th International Multidisciplinary Scientific GeoConference SGEM2018, Ecology, Economics, Education and Legislation, 2018, pp. 431-438. https://doi.org/10.5593/sgem2018/5.1/s20.056