++++ 1 . AGRICULTURE - COMMON ORGANIZATION OF THE MARKETS - CEREALS - EXPORT REFUND - EXPORTS TO THIRD COUNTRIES AND MEMBER STATES - DISTINCTION - SIGNIFICANCE FOR COMMUNITY - POWERS OF THE MEMBER STATES ( REGULATION NO 19 OF THE COUNCIL, ARTICLES 19, 20 ) 2 . AGRICULTURE - COMMON ORGANIZATION OF THE MARKETS - CEREALS - EXTRA-COMMUNITY LEVY - EXPORTS TO THIRD COUNTRIES - CONCEPT - POWERS OF THE MEMBER STATES ( REGULATION NO 19 OF THE COUNCIL, ARTICLE 20 ) 3 . AGRICULTURE - COMMON ORGANIZATION OF THE MARKETS - CEREALS - EXTRA-COMMUNITY LEVY - EXPORTS TO A THIRD COUNTRY - PROOF - RULES - POWERS AND OBLIGATIONS OF THE MEMBER STATES ( REGULATION NO 19 OF THE COUNCIL, ARTICLE 20 ) 4 . PRINCIPLES OF COMMUNITY LAW - NON-DISCRIMINATION RULE - INFRINGEMENT - CONCEPT 5 . AGRICULTURE - COMMON ORGANIZATION OF THE MARKETS - CEREALS - EXPORT REFUND - EXPORTS TO THIRD COUNTRIES AND THE MEMBER STATES - CONDITIONS ( REGULATION NO 19 OF THE COUNCIL, ARTICLES 19, 20 ) 6 . AGRICULTURE - COMMON ORGANIZATION OF THE MARKETS - CEREALS - TRADE WITH THIRD COUNTRIES WITHIN THE MEANING OF REGULATION NO 164/64 - SCOPE ( REGULATION NO 164/64/EEC OF THE COMMISSION, ARTICLE 1 )