TY JOUR TI Alloy technologies round timber on the rivers flow dimensions with disabilities KW rafting KW round timber KW units for the alloy KW rigging. JO Actual directions of scientific researches of the XXI century: theory and practice AU Perfilev, P.. AU Kartashov, A.. PY 2015 IS 3 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov