VARIABILITY OF PHYSICOCHEMICAL PROPERTIES OF WATER OF THE TRANSBOUNDARY POPRAD RIVER.Published in:Journal of Ecological Engineering, 2015, v. 16, n. 1, p. 100, doi. 10.12911/22998993/593By:PolichtLatawiec, Agnieszka;Bogdał, Andrzej;Kanownik, Włodzimierz;Kowalik, Tomasz;Ostrowski, KrzysztofPublication type:Article