TY JOUR TI THE ASSESSMENT OF VARIABILITY OF EXTRACTIVES IN THE APPLE FRUITS AT THE BOTANICAL GARDEN NAMED AFTER Vs.M. KRUTOVSKY KW apple-tree KW variety KW variability KW ex-tractives KW acidity JO Bulletin of KSAU AU Repyakh, M.V. PY 2018 IS PB Krasnoyarsk State Agrarian University