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Keywords from Image Description:
LS wasserstoffballon nach charles. Historische HeiLuftballone aus dem Buch Die Luftballone und das Reisen durch die Luft Die Luftballone und das Reisen durch die Luft google de id fEAAAAcAAJ before Ferdinand von Biedenfeld Julien Turgan Aircraft of the th century PDold Jacques Alexandre Csar Charles Gas balloons