Treaties — Interpretation — Principles and rules of interpretation — Context of provisions — General scheme dividing products into those from EEC and those from third countries — Need to interpret this scheme in light of special provisions for German Democratic Republic — The law of the European Communities

Treaties — Interpretation of — Principles and rules — As applied by the Court of Justice of the European Communities — Purpose of treaty — 1961 Agreement of Association between EEC and Greece — Meaning of ‘treatment’ in Protocol 14 annexed to that agreement — Whether EEC ‘countervailing charge’ was ‘customs duty or equivalent charge’ within Article 37 (2) (a) of 1961 agreement — The law of the European Communities