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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 311
WM. A JONES, BEAR TRAP WEIRS. JOUR. ASS'N ENG. SOCS. BEilRTRilP WEIRS / Jo&JBS.J PLATE. H. JiUVEBSIBLE BB^JiTJlfJf WB/B WITH SHOBT BASE. ___,Engineering
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
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