TY JOUR TI New design of the plough case for cuttings down KW felling KW primary soil processing KW tillage tools KW disc plough body KW construction JO Actual directions of scientific researches of the XXI century: theory and practice AU Zimarin, S.V. PY 2014 IS 2 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov