TY JOUR TI BACKGROUND SOILS HUMUS OF VAKHSKY OIL DEPOSIT (AVERAGE TAIGA OF WESTERN SIBERIA) KW Western Siberia KW middle taiga KW Vakhskoe oil deposit KW soil KW humus KW group and frac-tional structure JO Bulletin of KSAU AU Seredina, V.P. AU Nepotrebny, A.I. PY 2017 IS PB Krasnoyarsk State Agrarian University