Raamatud Pencoyd Iron Works
Steel in Construction: Convenient Rules, Formulæ and Tables for the Strength of Steel Shapes Used As Beams, Struts, Shafts, Etc., Made by the Pencoyd Iron Works, A. & P. Roberts Company, Philadelphia
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Wrought Iron and Steel in Construction: Convenient Rules, Formulae, and Tables for the Strength of Wrought Iron Shapes Used As Beams, Struts, Shafts,
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Steel in Construction: Convenient Rules, Formulae and Tables for the Strength of Steel Shapes Used As Beams, Struts, Shafts, Etc., Made by the Pencoyd ... A. & P. Roberts Company, Philadelphia ...
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Wrought Iron And Steel In Construction: Convenient Rules, Formulæ And Tables For The Strength Of Steel Shapes Used As Beams, Struts, Shafts, Etc., ... Iron And Steel Department ... Bridge And...
Pencoyd Iron Works, James Christie
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