TY JOUR TI Approvement of the winter bundling rafts composed of two-storeyed rafting units under the working conditions KW river KW timber rafting KW package KW bundle KW rafting unit KW raft. JO Actual directions of scientific researches of the XXI century: theory and practice AU Posypanov, S.V. PY 2014 IS 2 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov