Decree 12/1998 of 3 February concerning the Register of Contractors and Implementation of Classification.
BOPV (Official Gazette of the Basque Country) nº 31; 16-02-1998 (pdf, 39 kb)

ORDER of 4 February 1998, of the Finance and Public Administration Minister, approving the functioning regulations of the Administrative Contracting Counselling Board.
BOPV nº 32; 17-02-1998 (pdf, 25 kb)

ORDER of 4 February, 1998 of the Council for Public Administration and Revenue, setting out the operating rules governing the Official Registry of Contractors.
BOPV nº 32; 17-02-1998 (pdf, 34 kb)

Decree 12/1998 of 3 February concerning the Register of Contractors and Implementation of Classification (Correction of errors).
BOPV nº 56; 24-03-1998 (pdf, 14 kb)

Law 30/2007, of 30 October, on Public Sector Contracts.
BOE nº 261; 31-10-2007 (pdf, 736 kb)

With regard to the regulatory development of the Registry of Contractors and Implementation of the classification foreseen in the eleventh and final regulation of Law 30/2007 of 30 October, on Public Sector Contracts, until the regulatory development is complete, the provisions of Crown Decree 1998/2001 of 12 October, regulating Contracts with Government Bodies will remain in force.

Decree 149/1996, of 18 June, on issuing copies of documents and certificates and the validation of signatures in the General Government and Autonomous Organisations of the Autonomous Region of the Basque Country.
BOE nº 135; 15-07-1996  (pdf, 29 kb)

Real Decreto 817/2009, de 8 de mayo, por el que se desarrolla parcialmente la Ley 30/2007, de 30 de octubre, de Contratos de Sector Público.
BOE nº 118; 15-05-2009 (pdf, 4.348 kb).