TY JOUR TI Experimental studies of precision operation with dual-safety device timber milling tillage machines KW body work KW precision trigger KW guard KW optimize KW an obstacle. JO Actual directions of scientific researches of the XXI century: theory and practice AU Zhuravlev, I.. PY 2015 IS 3 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov