1 янв 1794 г. - Joseph Proust 1794
Описание:
He made the theory that a substance had the same make up where ever or how ever it was made. He discovered that the same substance was the same around the world.Добавлено на ленту времени:
Дата:
1 янв 1794 г.
Сейчас
~ 231 г назад