"Geschichte 1850-1900." . . . . . "Steelmaking : 1850-1900" . . . . . . "Steelmaking: 1850-1900" . . . . . . . . . "History"@en . "Steelmaking, 1850-1900"@en . . . "Acciai - Produzione - 1850-1900." . . . . "Stahlherstellung." . . "Institute of Metals." . . "Institute of Metals" . "Industrie sidérurgique 19e siècle." . .