TY JOUR TI REACTION OF THE ENVIRONMENT AND CONTENT OF HEAVY METALS IN ALLUVIAL SOILS IN THE PLAIN OF THE RIVER BIG YUGAN KW JO Bulletin of Nizhnevartovsk State University AU Shepeleva, L.F. AU Shepelev, A.I. AU Kravchenko, I.V. PY 2017 IS PB Nizhnevartovsk State University