Илсиньо. in: Witelo, De Natura, 1535. Справочная копия может быть в LOT 7007. Эта запись содержит старые данные из карточки подписи. Надписи на карточках: Rainbow; Light; Natural phenomenes; Science; BI Works; Еще
Public domain photograph of laboratory, science, research, free to use, no copyright restrictions image - Picryl description
Picryl description: Public domain image of child labor, exploitation, children workers, economic conditions, free to use, no copyright restrictions.
Picryl description: Public domain image of a military aircraft, assembly line, industrial facility, 1930s aviation, free to use, no copyright restrictions.