TY JOUR TI THEORETICAL RESEARCH OF THE ROTOR WHEEL OF THE REAPING MACHINE KW header KW rotor KW comb KW channel KW combing KW tangential JO Bulletin Samara State Agricultural Academy AU Fedin, M.A. AU Kukharev, O.N. AU Semov, I.N. PY 2018 IS 3 PB Samara State Agrarian University