TY JOUR TI Modeling of cabins of leaving and assessment of their quality on the example of trial proshchady Petrgu KW thinning KW harvesting operations KW the quality of the stand KW the trial area KW Motti JO Actual directions of scientific researches of the XXI century: theory and practice AU Ivashkova, V.. PY 2014 IS 2 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov