TY JOUR TI Silvicultural and economic characteristics forest exploitation in forests damaged by pests and diseases KW cost-effectiveness KW economic profit KW timber harvesting KW rent JO Actual directions of scientific researches of the XXI century: theory and practice AU Ilintsev, A.. AU Tretyakov, S.. PY 2014 IS 2 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov