Military hydrogen balloon, illustration. Filling with hydrogen the military balloon l'Entreprenant, circa 1794. Engraving in: Les Merveilles de la Science (The Wonders of Science), by Louis Figuier, France, 1868. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / CCI Archives |
Bildgröße: | 4000 px × 2134 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |