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Luftschiff
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keywords:("Luftschiff")
Recent researches in airship construction II : bending stresses on an airship in flight
Recent researches in airship construction III : a new type of nonrigid airship
Comparison of nonrigid and semirigid airships
Contribution to the technique of landing large airships. Part II
Effect of speed on economy of airship traffic
Altitude of equilibrium of an airship