TY JOUR TI Express method for determining the main indicators of quality wood of tree species growing in the temperate continental climatic zones KW wood KW quality KW growth ring KW porosity KW density KW strength JO Actual directions of scientific researches of the XXI century: theory and practice AU Varivodina, I.. AU Samoylenkov, V.. PY 2014 IS 2 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov