TY JOUR TI HUNGARIAN LILAC - THE PERSPECTIVE BIOINDICATOR FOR COMPARATIVE ASSESSMENT OF THE URBAN ENVIRONMENT POLLUTION DEGREE KW Syringa josikaea Jacq lilac. Betula pendula Roth birch KW leaf KW circle KW width KW asymmetry KW environment pollution KW city JO Bulletin of KSAU AU Polonskiy, V.I. AU Polyakova, I.S. PY 2014 IS PB Krasnoyarsk State Agrarian University