? ??????? ???????? ????? ??? ????? ?????? ???????, ??? ??????? ??? ???? ?? ????? ??????? ?? ???????? ??????? ?? ??????????:These early tractors have been cumbersome, and sick-suited to enter a area of planted row crops for weed Handle. The "normal" tractor definition is no more in existing use. Nevertheless, tractors with set wheel spacing in addit