Кравченко, Н. Б., and Е. І. Зеленська. 1. “COMPARATIVE ANALYSIS OF WATER QUALITY FROM PRIVATE SOURCES AND WATER SUPPLY OF KHARKIV”. Man and Environment. Issues of Neoecology, no. 3-4(24) (1), 84-88. https://periodicals.karazin.ua/humanenviron/article/view/5560.