TY JOUR TI THE ASSESSMENT OF VARIETIES SPECIMENS OF BIRD-CHERRY DEPENDING ON THEIR GENETIC ORIGIN IN THE NORTH-EAST OF RUSSIA KW bird-cherry KW introduction KW variety KW va- riety sample KW winter hardiness KW wreckers KW diseases JO Bulletin of KSAU AU Rengarten, G.A. AU Sorokopudov, V.N. PY 2019 IS 0 PB Krasnoyarsk State Agrarian University