18 май 1935 г. - Soil Conservation Service
Описание:
Teach/subsidize farmers to rotate crops, terrace fields, use contour plowing, and plant trees to stop soil erosion and conserve water| in response to plight of dust bowlДобавлено на ленту времени:
Дата:
18 май 1935 г.
Сейчас
~ 89 г назад
