Hydrogeochemical investigation of the influence of ceramic industry wastes on the fazenda Itaqui basin, Brazil - Silva, Andre Luiz Bonacin; Hypolito, Raphael; Gehrels, Hans; Norman, E. Peters; Hoehn, Eduard; Jensen, Karsten; Leibundgut, Chris; Griffioen, Jasper; Webb, Bruce; Willem, Jan Zaadnoordijk (International symposium of the scientific assembly of the International Association of Hydrological Sciences on Impact of human activity on groundwater dynamics, 2001)