TY JOUR TI Justification of allocation scheme and the ratio of sieves in screen shoes KW grain heap KW versatile grain cleaning machine KW sieve KW permissible unit load KW completeness of separation KW layout KW performance JO Forestry Engineering Journal AU Gievskiy, A.. AU Chernyshov , A.. AU Orobinskiy, V.. PY 2013 IS 3 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov