Arora, N. L.
Text Book of Railways Bridges and Tunnels - Bombay New India Publishing House 1996 - p.139
Railway Bridges and Tunnels Track Construction Selection and Investigation
625.1 A769T
Text Book of Railways Bridges and Tunnels - Bombay New India Publishing House 1996 - p.139
Railway Bridges and Tunnels Track Construction Selection and Investigation
625.1 A769T