AGRICULTURE - COMMON ORGANIZATION OF THE MARKETS - MILK AND MILK PRODUCTS - AID FOR THE PROCESSING OF SKIMMED MILK INTO CASEINS AND CASEINATES - FAILURE TO COMPLY WITH THE REQUIREMENT AS TO MAXIMUM WATER CONTENT - LOSS OF THE AID IN ITS ENTIRETY - PRINCIPLE OF PROPORTIONALITY - BREACH - NONE ( REGULATIONS ( EEC ) NOS 804/68 AND 987/68 OF THE COUNCIL ; REGULATION ( EEC ) NO 756/70 OF THE COMMISSION )