TY JOUR TI MONITORING OF FLUORINE CONTENT IN SOILS OF THE MINUSINSK FOREST STEPPE OF THE KRASNOYARSK REGION KW monitoring KW soil KW water-soluble fluorine KW content KW pollution KW migration KW reference sites KW Minusinsk forest-steppe. JO Bulletin of KSAU AU Voloshin, E.I. AU Sergeev, A.. AU Yuferova, E.V. PY 2021 IS 0 PB Krasnoyarsk State Agrarian University