Relationship of international law and municipal law — Treaties — Effect in municipal law — EEC Treaty, 1957 — Fundamental rights under national Constitution — Whether proceedings may be instituted before Constitutional Court alleging unconstitutionality of acts of European Community institutions

Human rights — Procedure for enforcement — Fundamental rights under Spanish Constitution, Articles 14 to 30 — EEC Treaty, 1957 and secondary legislation — Possible conflict with fundamental rights under Constitution — Whether acts of Community institutions subject to constitutional review to establish compatibility with fundamental constitutional rights — The law of Spain