Nitrate trends in springs as a factor influencing surface water quality. 7th Symposium for European Freshwater Sciences. Girona, Juny 27 – Juliol 1, 2011

22 gen. Nitrate trends in springs as a factor influencing surface water quality. 7th Symposium for European Freshwater Sciences. Girona, Juny 27 – Juliol 1, 2011