TY JOUR TI Loading and unloading works by production of preparation of wood KW handling KW wood cutting KW timber JO Actual directions of scientific researches of the XXI century: theory and practice AU Kurdyukov, R.P. AU Manukovsky, A.Y. AU Kurdyukov, D.P. PY 2014 IS 2 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov