2 июн 1928 г. - Ohio develops "School of the Air"
Описание:
the Ohio School of the Air program, was developed by the Ohio State Department of Education in the fall of 1928 (Duff, 1929; Holy, 1949)Добавлено на ленту времени:
Дата:
2 июн 1928 г.
Сейчас
~ 96 г назад
