++++ 1 . PROCEDURE - QUESTIONS REFERRED FOR A PRELIMINARY RULING - JURISDICTION OF THE COURT - LIMITS ( EEC TREATY, ARTICLE 177 ) 2 . COMMUNITY LAW - INTERPRETATION OF A PROVISION WHICH HAS BEEN APPLIED - REFERENCE TO THE STATE OF THE LAW IN FORCE ( EEC TREATY, ARTICLE 164, ARTICLE 177 ) 3 . COMMON CUSTOMS TARIFF - DESCRIPTION - INTERPRETATION - ABSENCE OF COMMUNITY LEGISLATION - AUTHORITY OF THE EXPLANATORY NOTES AND CLASSIFICATION OPINIONS OF THE CONVENTION ON THE BRUSSELS NOMENCLATURE 4 . AGRICULTURE - COMMON ORGANIZATION OF THE MARKETS - CEREALS - MAIZE GROATS WITHIN THE MEANING OF ARTICLE 1 ( D ) OF REGULATION NO 19/62 - CONCEPT