++++ 1 . COMMON CUSTOMS TARIFF - ADDITIONAL NOTE - MANDATORY FORCE 2 . COMMON CUSTOMS TARIFF - REPLACEMENT OF NATIONAL CUSTOMS TARIFFS - INTERPRETATION - EXCLUSIVE COMPETENCE OF COMMUNITY AUTHORITIES 3 . GATT - COMMITMENTS - MANDATORY FORCE FOR THE COMMUNITY - DETERMINATION BY REFERENCE TO COMMUNITY PROVISIONS 4 . COMMON CUSTOMS TARIFF - BRUSSELS CONVENTIONS ON NOMENCLATURE AND SETTING UP OF A CUSTOMS COOPERATION COUNCIL - COMMITMENTS - MANDATORY FORCE FOR THE COMMUNITY 5 . COMMON CUSTOMS TARIFF - CUSTOM COOPERATION COUNCIL - CLASSIFICATION OPINION - EFFECT - INTERPRETATION