FISHERIES - CONSERVATION OF THE RESOURCES OF THE SEA - COMMUNITY RULES APPLICABLE TO SPANISH VESSELS LAID DOWN BEFORE THE ENTRY INTO FORCE OF THE AGREEMENT BETWEEN THE EEC AND SPAIN - SUBSTITUTION FOR PRIOR INTERNATIONAL COMMITMENTS BETWEEN CERTAIN MEMBER STATES AND SPAIN - EFFECTS - ENFORCEABILITY AGAINST SPANISH FISHERMEN OF THE INTERIM COMMUNITY REGIME ( COUNCIL REGULATIONS NOS 1177/79 , 2897/79 , 541/80 , 1719/80 , 3305/80 AND 554/81 ; AGREEMENT BETWEEN THE EEC AND SPAIN OF 15 APRIL 1980 )