TY JOUR TI Improve control of resonance properties of the growing trees with core KW spruce KW acoustic performance of wood KW core KW humidity KW and air conditioning. JO Actual directions of scientific researches of the XXI century: theory and practice AU Kosolapova, K.. AU Yalpaeva, E.. AU Kolesnikova, A.A. AU Vazakhatdinov, R.. PY 2015 IS 3 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov