TY - JOUR A1 - Voss, M. A1 - Deutsch, B. A1 - Elmgren, R. A1 - Humborg, C. A1 - Kuuppo, P. A1 - Pastuszak, M. A1 - Rolff, C. A1 - Schulte, U. T1 - Source identification of nitrate by means of isotopic tracers in the Baltic Sea catchments JO - Biogeosciences J1 - BG VL - 3 IS - 4 SP - 663 EP - 676 Y1 - 2006/12/20 PB - Copernicus Publications SN - 1726-4189 UR - http://www.biogeosciences.net/3/663/2006/ L1 - http://www.biogeosciences.net/3/663/2006/bg-3-663-2006.pdf DO - 10.5194/bg-3-663-2006 ER -