TY JOUR TI THE STRUCTURE OF EXPERIMENTAL STUDIES OF THE WHEELED 4k4а TRACTOR ADAPTATION TO THE TILLAGE TECHNOLOGIES KW adaptation KW tillage machine KW rational parameters KW operating conditions KW tractor KW traction-clutch characteristics JO Bulletin of KSAU AU Selivanov, N.I. AU Makeeva, Y.N. PY 2015 IS PB Krasnoyarsk State Agrarian University