?? ?? ????????? ???? ???????, ?? ?????? ?? ?????????? ??? ????????? ???????.??? ?? ??????? ???????? ???? ??????? ?????? ?????? ????????? ??? ???????????? ?????????????? ?? ????? ? ?????? ??????????? ??????????????? ?????? ?????? ???? ?? ???????????? –A bulldozer can be a observe-type tractor using a blade hooked up from the entrance and also a ro