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Wettbewerb um den besten Weg, einen Ballon zu heben, ohne Ballastgas z...
Design drawing shows proposal by Louis Panafieu in which the operator in an open car attached to the balloon achieves lift without loss of gas in ballast by manipulating cords on underside of the balloon. Inclu... Mehr
Projet de Louis Panafieu. - Public domain portrait drawing
Picryl description: Public domain illustrated book page scan, drawings, free to use art, no copyright restrictions image.