Steel in construction. Convenient rules, formulæ and tables for the strength of steel shapes used as beams, struts, shafts, etc., made by the Pencoyd A. & P. Roberts company, Philadelphia

Steel in construction. Convenient rules, formulæ 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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Steel in construction. Convenient rules, formulæ and tables for the strength of steel shapes used as beams, struts, shafts, etc., made by the Pencoyd A. & P. Roberts company, Philadelphia
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission.
Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
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