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Prüfung
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Methods of testing the insulation and resistance of street railway lines
Fereday and Palmer's patent stress recorder
Because it's tested, millions travel safely -- H
Amsler dynamometer and inspection car
Mechanical Tests of Macerated Phenolic Molding Material
Flight Investigation of the Effect of Surface Roughness on Wing Profile Drag with Transition Fixed
Cowling and Cooling Tests of a Fleetwings Model 33 Airplane in Flight