WERE MEANT TO AFFORD THE PRODUCERS AND TRADERS CONCERNED A STABLE BASIS FOR THEIR CALCULATIONS . IT WAS ALSO FOR THAT REASON THAT THE NEW RATE WAS IN PRINCIPLE TO ENTER INTO FORCE AT THE BEGINNING OF THE NEW MARKETING YEAR WHEN AGRICULTURAL PRICES CHANGE IN ANY CASE . HOWEVER , THE COUNCIL WISHED TO TAKE ACCOUNT NOT ONLY OF THE STABILITY OF PRICES THAT ARE LINKED TO THE MARKETING YEAR ; EVEN IN OTHER CASES THE NEW GREEN RATE WAS MEANT , ACCORDING TO THE RECITAL , TO ENTER INTO FORCE ' AS A RULE ' AT THE TIME WHEN PRICES WERE ADJUSTED , SAVE ONLY IN ' CERTAIN CASES ' IN WHICH IT SHOULD TAKE EFFECT IMMEDIATELY . IN THE VERWALTUNGSGERICHT ' S VIEW , THE SELLING PRICES FIXED IN ADVANCE DO NOT BELONG TO THAT GROUP OF CASES . IT THEREFORE TAKES THE VIEW THAT QUESTION 1 MUST BE ANSWERED IN THE AFFIRMATIVE .
15 THE PLAINTIFF SHARES THE VERWALTUNGSGERICHT ' S VIEW CONCERNING THE INTERPRETATION AND APPLICATION OF REGULATION NO 850/81 .
16 THE COMMISSION POINTS OUT THAT REGULATION NO 850/81 DOES NOT CONCERN COMMUNITY RULES RELATING TO AGRICULTURAL PRICES EXPRESSED IN ECU BUT ONLY THE EXCHANGE RATES FOR CONVERTING THOSE PRICES INTO NATIONAL CURRENCY . THE FIFTH RECITAL IN THE PREAMBLE TO THAT REGULATION CORRESPONDS TO ALMOST IDENTICAL RECITALS IN THE PREAMBLES TO A LARGE NUMBER OF OTHER REGULATIONS OF THE SAME KIND AND MERELY INDICATES THAT WHEN ADJUSTING THE GREEN RATES ON 1 APRIL 1981 THE COUNCIL WANTED TO CONTINUE TO ADHERE TO THE PRINCIPLES WHICH IT HAD OBSERVED FOR A LONG TIME , NAMELY :
( I ) TO TAKE ACCOUNT OF THE EFFECTS OF THE ADJUSTMENT OF THE GREEN RATES ON NATIONAL PRICE STRUCTURES ;
( II)TO MAKE THE ADJUSTMENT OF THE GREEN RATES COINCIDE AS FAR AS POSSIBLE WITH THE BEGINNING OF THE NEW MARKETING YEAR FOR THE PRODUCT IN QUESTION WHEN AS A GENERAL RULE COMMON PRICES ARE ADJUSTED IN ANY CASE ;
( III)TO ADJUST THE GREEN RATES FOR COUNTRIES WITH STRONG CURRENCIES ONLY WHEN COMMON PRICES ARE ADJUSTED BECAUSE THIS HELPS TO PREVENT A FALL IN AGRICULTURAL PRODUCERS ' INCOMES WHICH WOULD OTHERWISE OCCUR AS A RESULT OF THE NEW GREEN RATES .
THOSE PRINCIPLES WERE OBSERVED IN REGULATION NO 850/81 SINCE THE BEGINNING OF THE NEW MARKETING YEAR FOR BEEF COINCIDED EXACTLY WITH THE ENTRY INTO FORCE OF THE REGULATION .
17 THE COMMISSION OBSERVES , HOWEVER , THAT IT HAS NEVER BEEN SUGGESTED IN THIS CONTEXT THAT THE ADJUSTMENT OF THE GREEN RATES ON THE DATES LAID DOWN IN THE RELEVANT REGULATIONS APPLIES ONLY TO THE PRICES RELATED TO A MARKETING YEAR , SUCH AS GUIDE PRICES AND INTERVENTION PRICES , AND NOT TO OTHER SELLING OR PURCHASE PRICES FIXED WITHIN THE FRAMEWORK OF THE RELEVANT MARKET ORGANIZATION .
18 THE COMMISSION ' S OBSERVATION THAT THE REGULATION IN QUESTION DOES NOT ALTER THE COMMON PRICES EXPRESSED IN ECU BUT ONLY THE EXCHANGE RATES FOR CONVERTING