TY JOUR TI PREDICTION DAMAGEABILITY LEAVES OF A TREE TRUNK ON THE CUTTING AREA WHEN THE FIRST STAGE PRIMARY WOOD TRANSPORT KW primary forest transportation KW podtrelevka timber harvesting. JO Actual directions of scientific researches of the XXI century: theory and practice AU Bondarenko, A.. AU Chernykh, A.S. AU Abramov, V.V. AU Serebryanskiy, A.I. PY 2014 IS 2 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov