TY JOUR TI Of damage to remaining trees trunks during skidding stems to discontinuities logging 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. PY 2014 IS 2 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov