TY JOUR TI THE CONTENT PECULIARITIES OF BIOLOGICALLY ACTIVE SUBSTANCES IN BIRD CHERRY TREE (PADUS AVIUM MILL.) LEAVES IN CONNECTION WITH HABITATION CONDITIONS KW snow cover KW solid phase KW dry residue KW leaves KW bird cherry tree (Padus avium Mill.) KW tanning substances KW vitamin C KW organic acids KW chlorophyll JO Bulletin of KSAU AU Chernykh, E.P. AU Gogoleva, O.V. AU Pervyshina, G.G. PY 2012 IS PB Krasnoyarsk State Agrarian University