??? ???? ?????, ??? ???????????????? ? ??????? ??????? ????? ???? ???????????.?????????? - ?????? , ???????? ?????? , ????? ????????? ... , ?????? ?????? ????????????????? - ?????? , ??? ???? , ????? ????????? ?? ????... , ?????? ????????A contemporary 4wd articulated crawler electrical power unit planting wheat in North Dakota Inside the early twe