%0 Journal Article %T PRECISION OF MEASUREMENT AND DIRECTED ASYMMETRY IN LEAF PLATES OF BETULA PENDULA ROTH %A Baranov, S.G. %A Bibik, T.S. %A Il'in, L.I. %K leaves of birch, directed asymmetry, fluctuating asymmetry, dispersion analysis. %J Vestnik of Kazan State Agrarian University %D 2017 %N 12 %P 7 %I Kazan state agrarian University