TY JOUR TI Impact on the girth thinning of pine built with high initial density KW forest plantation KW density KW thinning KW girth JO Actual directions of scientific researches of the XXI century: theory and practice AU Kuklina, N.. AU Chefranova, M.. AU Domrachev, N.. PY 2015 IS 3 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov