TY JOUR TI To assess the health test model chippers in working conditions KW prototype chipper KW cutting KW felling residues. JO Actual directions of scientific researches of the XXI century: theory and practice AU Fetyaev, A.. PY 2015 IS 3 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov