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

di James Herron
2/5
Formato
58 pagine, [microform]
Prima pubblicazione
1841
Editori
E.G. Dorsey
Soggetti
Railroad tracks·Wood·Preservation
Linguaggio
English

Libri

Libri simili