%0 Journal Article %T Minimum possible sample timber for research %A Kosichenko, N.E. %K wood, early, late, diffuse-porous, ringed, ontogeny, tracheid, core density. %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