Journal of the Association of Engineering Societies (1881)
Association of Engineering Societies (U.S.) · New York, [etc.] Board of Managers · leaf 320
252 ASSOCIATION OF ENGINEERING SOCIETIES. Graph i C R e jq r ese titctf ac!,n# onmoUifi N. yatne ofcH ~f>en AB is horizontal Q m value ofcf. vrhen AB is Vertical-
Engineering
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