TY JOUR TI Assessment of the ecological well-being of the rivers of the Middle Urals in areas with increased technogenic load KW heavy metals KW physico-chemical indicators KW natural water sources KW water pollution KW industrial pollution. JO Agrarian Bulletin of the AU Gutova, M.O. AU Flefel', H.E. AU Andryushechkina, M.S. PY 2020 IS 198 PB Ural State Agrarian University