practical description of Herron's patent trellis railway structure ...

Practical description of Herron's patent trellis railway structure ...

also, the patent wrought iron railway chairs, new and improved mode of joining the ends of railway bars, scarfing timbers, and improved fastenings

por James Herron
2/5
Formato
58 paginas, [microform]
Primera publicación
1841
Editores
E.G. Dorsey
Sujetos
Railroad tracks·Wood·Preservation
Idioma
English

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