Nekos, A.N., Maksimov, A.M. and Shevchyk, K.V. 2019. Ecological Quality of Natural Waters from of Kharkiv Urban Springs. Man and Environment. Issues of Neoecology. 31, 31 (Jul. 2019), 96-103. DOI:https://doi.org/10.26565/1992-4224-2019-31-09.