%0 Journal Article %T On the modernization of drills for combined stumps %A Fedorov, O.. %A Rybalkin, D.. %K drill, stumps, fixing cones. %J Actual directions of scientific researches of the XXI century: theory and practice %D 2015 %N 3 %P 3 %I FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov