TY JOUR TI Modification by tannins extract of binding for production of chipboard KW the cortex KW tannids (tannins) KW wood composite KW binding KW strength KW swеlling KW mathematical model JO Actual directions of scientific researches of the XXI century: theory and practice AU Vakhnina, T.. AU Borovkova, A.. PY 2014 IS 2 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov