1 . AGRICULTURE - MONETARY MEASURES - ALTERATION IN THE VALUE OF THE CURRENCIES COMPRISING THE ECU - ANNUAL REVIEW OF AGRICULTURAL PRICES - EXPORTS REFUNDS - CANCELLATION OF ADVANCE FIXING - NO ( COUNCIL REGULATION NO 1134/68 , ARTS . 1 AND 4 ( 1 )) 2 . AGRICULTURE - MONETARY MEASURES - ALTERATION IN THE REPRESENTATIVE RATES - EXPORT REFUNDS - CANCELLATION OF ADVANCE FIXING - DISADVANTAGE FOR THE EXPORTER - CALCULATION THEREOF ( COUNCIL REGULATION NO 878/77 , ART . 4 ; COMMISSION REGULATION NO 1054/78 , ART . 1 ( 1 ))