%0 Journal Article %T Determination of the yield of lumber produced of logs, with several quality areas %A Kholkina, N.. %A Razumov, E.. %A Pekmenov, V.. %A Mikryukova, E.. %K wood, timber, quality area, lumber. %J Actual directions of scientific researches of the XXI century: theory and practice %D 2014 %N 2 %P 4 %I FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov