TY JOUR TI ECOLOGICAL AND GEOCHEMICAL ANALYSIS OF SURFACE WATER IN THE ZONE OF INFLUENCE OF OIL PRODUCTION ON THE TERRITORY OF KHANTY-MANSI AUTONOMOUS DISTRICT - YUGRA KW surface waters KW sediment KW concen-tration KW oil JO Bulletin of KSAU AU Gaevaya, E.V. AU Zakharova, E.V. PY 2016 IS PB Krasnoyarsk State Agrarian University