Qualification system with call for competition for construction, repair and maintenance of railway tunnels. Contact Adif, att.n Jesus M Campo Campo, Madrid, tel +34 917674391, fax +34 917674490, e-mail dcompras@adif.es. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=363094-2013. 45/13.
