TY JOUR TI CHEMICAL COMPOSITION OF SOUR CHERRY FRUITS BREEDED BY TATAR RESEARCH INSTITUTE OF AGRICULTURE KW sour cherry (Prunus cerasus L.) KW cultivar KW hybrid KW dry matter KW sugars KW acid KW vitamin C KW variability JO Vestnik of Kazan State Agrarian University AU Osipov, G.E. AU Petrova, N.V. AU Kirillova, E.S. AU Kazeeva, N.A. PY 2020 IS 15 PB Kazan state agrarian University