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)

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 Contracting (pdf, 736 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).