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Solution Du Probleme De La Navigation Dans L'Air. Par La Direction Des Aerostats. Expose D'un Nouveau Systeme De Direction.
Librairie De Frederic Henry, Paris, 1864. 6mo., pp. 83 + 5 wood engraved plates. Publisher's paper covers, uncut. Extremities lightly frayed; general age toning. An early study on "... not only the possibility, but also the ease in piloting a balloon in flight." More
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