1 . FREE MOVEMENT OF GOODS - QUANTITATIVE RESTRICTIONS - MEASURES HAVING EQUIVALENT EFFECT - PROHIBITIONS - SCOPE ( EEC TREATY , ART . 30 ET SEQ .) 2 . FREE MOVEMENT OF GOODS - QUANTITATIVE RESTRICTIONS ON EXPORTS - MEASURES HAVING EQUIVALENT EFFECT - CONCEPT - COMMUNITY RULES FOR GRANTING AID FOR SKIMMED MILK PROCESSED INTO COMPOUND FEEDINGSTUFFS - EXCLUSION ( EEC TREATY , ART . 34 ) 3 . AGRICULTURE - COMMON ORGANIZATION OF THE MARKETS - DISCRIMINATION BETWEEN PRODUCERS OR CONSUMERS - RULES FOR GRANTING AID - DIFFERENT TREATMENT OBJECTIVELY JUSTIFIED - NO DISCRIMINATION ( EEC TREATY , ART . 40 ( 3 ), SECOND PARAGRAPH ) 4 . COMMUNITY LAW - PRINCIPLES - PROPORTIONALITY - RULES FOR GRANTING AID - PRIOR ADMINISTRATIVE SUPERVISION - WHETHER PERMISSIBLE 5 . AGRICULTURE - COMMON ORGANIZATION OF THE MARKETS - MILK AND MILK PRODUCTS - AID FOR SKIMMED MILK PROCESSED INTO COMPOUND FEEDINGSTUFFS - RULES FOR GRANTING SUCH AID - REQUIREMENTS OF PROOF - IMPERATIVE ( COMMISSION REGULATION NO 1725/79 , ARTS 6 ( 2 ) AND 7 )