Investigation of the nutrients source apportionmentVassiljev, Anatoli; Blinova, Irina; Vennik, KerstiNordic Hydrological Conference : Uppsala, Sweden, 26-30 June 2000. Vol. 12000 / p. 215-222 : ill Investigation of trends of concentrations in Estonian rivers and emission coefficientsVassiljev, Anatoli; Blinova, IrinaNordic Hydrological Conference : Uppsala, Sweden, 26-30 June 2000. Vol. 12000 / p. 208-214 : ill Nutrient losses from two small agricultural catchments in EstoniaLoigu, Enn; Iital, ArvoNordic Hydrological Conference : Uppsala, Sweden, 26-30 June 2000. Vol. 12000 / p. 139-145