%0 Journal Article %T ANALYSIS OF THE STATUS OF PRELIMINARY GRAIN CLEANING IN FARMS OF THE NORTH-WESTERN REGION OF THE RUSSIAN FEDERATION AND PROSPECTS FOR IMPROVEMENT %A Volhonov, M.S. %A Zimin, I.B. %A Ostrovskiy, Y.N. %K weediness, grain moisture, preliminary cleaning of grain, heap cleaner, overseeding, weeds, grain heap %J Vestnik of Kazan State Agrarian University %D 2020 %N 15 %P 4 %I Kazan state agrarian University