%0 Journal Article %T Stability of trees pine ordinary different categories to root sponge %A Rebko, S.. %K сосна обыкновенная, устойчивость, корневая губка. %J Actual directions of scientific researches of the XXI century: theory and practice %D 2015 %N 3 %P 1 %I FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov