AGRICULTURE - COMMON ORGANIZATION OF THE MARKET - WINE - INCREASE OF NATURAL ALCOHOLIC STRENGTH BY VOLUME - PERMISSIBLE ENRICHMENT METHODS DETERMINED BY THE COMMUNITY - NATURAL LEGISLATION PROHIBITING THE ADDITION OF RECTIFIED CONCENTRATED GRAPE MUST IN THE PRODUCTION OF LOCAL WINE AND OF QUALITY WINES PRODUCED IN SPECIFIED REGIONS - NOT PERMISSIBLE ( COUNCIL REGULATIONS NO 337/79 , ART . 32 ( 1 ) AND ART . 33 ( 1 ); NO 338/79 , ART . 8 ( 2 ) AND ART . 19 ( 1 ); NO 355/79 , ART . 2 ( 3 ) ( I ), SECOND SUBPARAGRAPH )