TY JOUR TI COMPLEXES OF CHAMAEDAPHNE CALYCULATA (L.) MOENCH FLAVONOIDS IN OLIGOTROPHIC BOGS OF THE MIDDLE OB RIVER KW JO Bulletin of Nizhnevartovsk State University AU Usmanov, I.Y. AU Yumagulova, E.R. AU Aleksandrova, V.V. AU Gonchar, I.G. AU Scherbakov, A.V. AU Ivanov, V.B. PY 2019 IS PB Nizhnevartovsk State University