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File:The-Aeroscope-designed-by-Joseph-B-Strauss-lifted-passengers-265-ft-up-on-a-car-balanced-on-a-380-ton-concrete-counterweight-and-monted-on-a-turntable--Sci-American-April-10-1915.jpg

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current10:19, 5 March 2015Thumbnail for version as of 10:19, 5 March 2015443 × 541 (65 KB)Ccarlsson (talk | contribs)

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