1 . COMPETITION - COMMUNITY RULES - NATIONAL LEGISLATION ON THE PRICE OF BOOKS - COMPATIBILITY - CONDITIONS ( EEC TREATY , ART . 3 ( F ), ART . 5 , SECOND PARA . AND ART . 85 ) 2 . FREE MOVEMENT OF GOODS - QUANTITATIVE RESTRICTIONS - MEASURES EQUIVALENT IN EFFECT - LEGISLATION ON THE PRICE OF BOOKS - PROHIBITION - CONDITIONS ( EEC TREATY , ART . 30 )