%0 Journal Article %T Raft units lines for small and middle-level rivers %A Posypanov, S.V. %K small and middle-level rivers, timber rafting, rafting units lines, round wood. %J Actual directions of scientific researches of the XXI century: theory and practice %D 2015 %N %P 4 %I FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov