[Подробная информация о механизмах калькулятора Лейбница, самого продвинутого калькулятора своего времени]
Резюме
Picryl description: Public domain illustrated book page scan, engraving, free to use art, no copyright restrictions image.
Теги
Дата
01/01/1727
Авторы
Leupold, Jacob, 1674-1727.
Источник
Library of Congress
Ссылка
Информация о правах
No known restrictions on publication in the U.S. Use elsewhere may be restricted by other countries' laws. For general information see "Copyright and Other Restrictions ...," http://www.loc.gov/rr/print/195_copr.html