TY JOUR TI THE BASIC METHODS TO ASSESS THE STRENGTH OF RIGID ROAD CLOTHES LOGGING ROADS KW JO Voronezh Scientific-Technical Bulletin AU Logachev, V.. AU Skrypnikov, A.V. PY 2012 IS 1 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov