Kopacz, M. et al. 2018. The influence of structural and functional changes on N-P-K input of agricultural origin and surface water quality in the upper Dunajec River basin in the years 1980–2010. Geology, Geophysics and Environment. 44, 3 (Aug. 2018), 295. DOI:https://doi.org/10.7494/geol.2018.44.3.295.