TY JOUR TI Effect of thinning on growth and commodity structure of mixed stands of pine and spruce of wood-sorrel family type forests KW mixed stands KW the distribution of trees by diameter KW commodity stand structure JO Forestry Engineering Journal AU Danilov, D.A. AU Beliaeva, N.V. AU Kovalev, N.. PY 2014 IS 4 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov