Cast iron

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421	PDF Document Add to Reading List Source URL: nptel.iitm.ac.in Language: English - Date: 2011-04-20 00:08:41 Building materials Steels Metallurgy Numismatics Elasticity Cast iron Ductile iron Alloy Aluminium alloy Chemistry Materials science Physics
422	PDF Document Add to Reading List Source URL: pdfhost.focus.nps.gov Language: English - Date: 2008-03-18 03:17:38 Daniel D. Badger E. V. Haughwout Building Cast iron New York City Arts New York Cast-iron architecture SoHo John B. Snook
423	PDF Document Add to Reading List Source URL: pdfhost.focus.nps.gov Language: English - Date: 2012-07-27 13:34:10 Geography of the United States 302 Washington St. F.M. Knight Building Old Town Chinatown Portland Oregon Cast-iron architecture Oregon
424	PDF Document Add to Reading List Source URL: memory.loc.gov Language: English - Date: 2011-08-31 16:58:16 Truss bridge Wrought Iron Bridge Company Arch bridge Bridge Cast iron Bridge No. L-5573 Shropshire Bridges Civil engineering