Books by Jay Du Bois:
Books in the extended shelves:
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Du Bois, Jay (Augustus Jay), 1849-1915: The strains in framed structures : with numerous practical applications to cranes, bridge, roof and suspension trusses, braced arches, pivot and draw spans, continuous girders, etc. : also, determination of dimensions and designing of details, specifications and contracts, complete designs and working drawings (J. Wiley, 1888) (page images at HathiTrust)
Find more by Jay Du Bois at your library, or elsewhere.