TY JOUR TI INTRODUCTION OF THE CONCEPT OF CLOSED-CYCLE ECONOMY IN THE USE OF WASTE FROM TIMBER PRODUCTION KW wood waste KW integrated use of raw materials KW production chain KW closed-cycle economy KW resource processing JO Actual directions of scientific researches of the XXI century: theory and practice AU Bespalova, V.. PY 2023 IS 11 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov