++++ 1 . POLICY OF THE EEC - COMMON RULES - TAX PROVISIONS - CUMULATIVE MULTI-STAGE TAX - AVERAGE RATES FOR IMPORTED PRODUCTS WITHIN THE MEANING OF THE FIRST PARAGRAPH OF ARTICLE 97 - NO INDIVIDUAL RIGHTS 2 . POLICY OF THE EEC - COMMON RULES - TAX PROVISIONS - CUMULATIVE MULTI-STAGE TAX - AVERAGE RATES FOR IMPORTED PRODUCTS OR GROUPS OF IMPORTED PRODUCTS - ESTABLISHMENT BY MEMBER STATES - VALIDITY ( EEC TREATY, ARTICLE 97 ) 3 . CUSTOMS DUTIES AND INTERNAL TAXATION - JOINT APPLICABILITY TO THE SAME CASE OF PROVISIONS RELATING THERETO - IMPOSSIBILITY OF SUCH JOINT APPLICATION ( EEC TREATY, ARTICLES 12, 13 AND 95 ) 4 . POLICY OF THE EEC - COMMON RULES - TAX PROVISIONS - TAXATION INTENDED TO PUT NATIONAL PRODUCTS AND IMPORTED PRODUCTS IN A COMPARABLE TAX POSITION - NATURE OF INTERNAL TAXATION ( EEC TREATY, ARTICLE 95 )