World tunnelling and subsurface excavation.

Bibliographic Details
New Title:	World tunnelling
Format:	Journal
Language:	English
Published:	London : Mining Journal, -1998.
Subjects:	Tunneling > Periodicals. Tunneling. Tunnels & tunnelling Periodicals.
Online Access:	http://www.mjconstruct.com/tunnel/tunnel.asp
Online Availability: