Underground space [electronic resource] : the 4th dimension of metropolises : Proceedings of the World Tunnel Congress Prague, Czech Republic, 5-10 May 2007 /

Míreanna comhchosúla

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  Foilsithe / Cruthaithe: (1974)
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  de réir: Proceedings of the North American Tunneling 2006 Conference (2006 : Chicago, USA), et al.
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• North American tunneling 2006 [electronic resource] : proceedings of the North American tunneling conference 2006 ;10-15 June 2006, Chicago, USA /
  de réir: Proceedings of the North American Tunneling 2006 Conference (2006 : Chicago, USA), et al.
  Foilsithe / Cruthaithe: (2006)