1891-1915 - Peak of the nature study movement (1 янв 1891 г. – 31 дек 1915 г.)
Описание:
-Scientific study debates
-Cook County normal schools
-Majority of American educators agree about nature study
Добавлено на ленту времени:
"Study Nature, Not Books"
A timeline of important events surrounding the nature study ...
Дата:
