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Journal of the Association of Engineering Societies (1881)
Association of Engineering Societies (U.S.) · New York, [etc.] Board of Managers · leaf 168
Fig. 9. Backing for Arch-Rings at Piers. … Fig. 10. Reinforcement and Buttresses to support Girders over Prison' Point Street.Engineering
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
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