TY JOUR TI The increase of permeability of logging trucks on the basis of high tech engineering solutions KW Truck-and-trailer KW timber transportation KW active trailer KW high permeability JO Actual directions of scientific researches of the XXI century: theory and practice AU Ishkov, V.. PY 2015 IS 3 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov