TY JOUR TI BIOLOGICALLY ACTIVE SUBSTANCE EXTRACT PRODUCTION IN THE PROCESS OF MULTI-STAGE EXTRACTION FROM THE VEGETABLE RAW MATERIAL POLYCOMPOSITE MIXTURES KW cranberry tree KW iridoids KW biologically active substances KW polycomposite mixture KW biomass JO Bulletin of KSAU AU Ivanova, M.V. AU Levin, B.D. PY 2012 IS PB Krasnoyarsk State Agrarian University