TY JOUR TI THE MODES AND FACILITIES OF THE TIMBER SKIDDINGTECHNOLOGICAL PROCESS KW technological process KW timber skidding KW classification KW method KW facilities JO Bulletin of KSAU AU Valyazhonkov, V.D. AU Dobrynin, Y.A. AU Tikhonov, I.I. AU Andronov, A.V. PY 2014 IS PB Krasnoyarsk State Agrarian University