TY JOUR TI FEATURES OF FORMATION OF PROTECTIVE PLANTINGS FROM A BIRCH HANGING IN THE CENTRAL FOREST-STEPPE OF RUSSIA KW hanging birch KW protective plantings KW growth KW efficiency JO Forestry Engineering Journal AU Mikhin, V.I. AU Mikhina, E.A. PY 2020 IS 9 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov