%0 Journal Article %T WOOD DENSITY INFLUENCE ON THE LOGGING SYSTEM PRODUCTIVITY OF THE MACHINES WHICH ARE USED IN THE AMUR REGION %A Kostenko, N.A. %K wood density, logging machines, productivity, the Amur region %J Bulletin of KSAU %D 2012 %N 0 %P 4 %I Krasnoyarsk State Agrarian University