%0 Journal Article %T THE EFFICIENCY ASSESSMENT OF THE TRACTORS K-744P SERIES USE FOR THE SOIL MAIN PROCESSING %A Selivanov, N.I. %A Zaprudskiy, V.N. %K factor costs and costs per unit, soil processing, technology, tractor, efficiency %J Bulletin of KSAU %D 2013 %N %P 6 %I Krasnoyarsk State Agrarian University