Buscar : Título Autor Tema Serie que comienza con: 10 20 30 50 100 por página < Encabezamientos 10 anteriores Encabezamientos 10 siguientes > Consultar encabezamientos # Iron and steel bridges 1 SEE ALSO: Steel, Structural 10 Iron and steel bridges -- Pennsylvania -- Philadelphia Region -- Design and construction -- History. 1 Iron and steel bridges -- Pennsylvania -- Schuylkill River -- Design and construction -- History. 1 Iron and steel building -- SEE: Building, Iron and steel 18 Iron and steel industry -- United States. 1 Iron and Steel Institute. -- Periodicals. 1 Iron and steel workers 2 SEE ALSO narrower term: Blacksmiths. 12 Iron and steel workers -- Drama. 3 Iron and steel workers -- England -- Sheffield -- Drama. 1 Iron and steel workers -- Fiction. 5 10 20 30 50 100 por página < Encabezamientos 10 anteriores Encabezamientos 10 siguientes >