TY JOUR TI THE RESEARCH OF THE HYDROMECHANICAL TRANSMISSION REDUCTION RATIOS ON THE SKIDDER TECHNICAL AND ECONOMIC INDICES KW logging operation KW hydromechanical transmission KW skidder KW whiplash technology KW skidder technical and economic indices JO Bulletin of KSAU AU Vu Hai Quan, .. AU Valyazhonkov, V.D. AU Dovzhik, V.L. AU Mikhailov, O.A. PY 2014 IS PB Krasnoyarsk State Agrarian University