Estonian ground water : quality problems and possible technology for improvementVeressinina, Jelena; Trapido, Marina; Munter, Rein4th International Congress and Trade Fair "Water : Ecology and Technology" : ECWATECH-2000 : Moscow, 30 May - 2 June 2000 : abstracts2000 / p. 208-209 Estonian ground water : quality problems and possible technology for improvementMunter, Rein; Kallas, Juha; Trapido, Marina; Veressinina, Jelena; Loorits, HiljaEcoBalt '2000 : starptautiska konference = international conference : Riga, 2000. gada 26.-27. maija. I2000 / p. I-17 - I-27