00525naa#a2200193#i#450# EN\\bibl\78884 20260220084431.5 1819-4036 20150525b2015####ek#y0engy0150####ca RUS RU WHEEL TRACTOR BALLASTING IN TILLAGE Journal article Krasnoyarsk Krasnoyarsk State Agrarian University 2015 4 с. Journal article local . 629.114.2 RUS Selivanov N I Makeeva Yu N sej.kgau.ru