12 июл 1890 г. - 1890
Описание:
The combine harvester, which combined the cutting and threshing of grain crops, came into widespread use in California. It gradually spread to other western states. The combine reduced the amount of labor needed to harvest one hectare of wheat from 37 to 6.25 man-hours.Добавлено на ленту времени:
Дата:
12 июл 1890 г.
Сейчас
~ 135 г назад