'Protocol for the accession of the Portuguese Republic and the Kingdom of Spain to the Treaty of Economic, Social and Cultural Collaboration and Collective Self-Defence, signed at Brussels on 17 March 1948, as amended by the "Protocol modifying and completing the Brussels Treaty", signed at Paris on 23 October 1954' — Corpas Comhthreomhar Béarla‑Gaeilge de Théacsanna Reachtúla