Paulo Favas. "ENVIRONMENTAL RISK ASSOCIATED WITH HEAVY METAL POLLUTION IN SOILS BASED ON GEOCHEMICAL FRACTIONATION." SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 13th SGEM GeoConference on ECOLOGY, ECONOMICS, EDUCATION AND LEGISLATION (2013). https://doi.org/10.5593/sgem2013/be5.v1/s20.055