Treaties — Effect in municipal law — EEC Treaty, 1957 — Legislation enacted by EEC institutions — Status under municipal law — Regulations — Direct applicability — Conditions — EEC Council Regulation No 570/86 on Trade between the Community and the Canary Islands

Treaties — Effect in municipal law — Treaty concerning the Accession of Spain and Portugal to the European Communities, 1985 and Protocol No 2 — Territorial scope of Community for customs purposes — Direct applicability of acts of Community institutions — Community regulation enacted shortly after accession of new Member States in execution of Protocol No 2

Relationship of international law and municipal law — Treaties — Incorporation of provisions into municipal legal order — Spanish Constitution, Article 93 — EEC Treaty, 1957 — Nature of legal order established by Treaty

Treaties — Conclusion and operation — Constitutional limitations — Acts of institutions established by EEC Treaty — Method of implementation under municipal law — Executive order — Legality — Reference to Community regulation as basis for exercise of executive regulatory powers

International organizations — EEC — Legal status — Powers — Legislation — Regulations enacted by Council — Whether directly applicable in municipal legal order of Member States — EEC Treaty, 1957 — Article 189 — Institutions — Court of Justice of the European Communities — Powers — Article 177 — Effect of decisions in municipal legal order of Member States

Economics, trade and finance — Taxation — EEC Treaty, 1957 — Customs union — Definition of the concept of “originating products” — EEC Council Regulation No 570/86 — The law of Spain