1 . EUROPEAN COMMUNITIES - OWN RESOURCES - CUSTOMS DUTIES UNDULY LEVIED - REMISSION ON EQUITABLE GROUNDS - APPLICATION OF NATIONAL LAW - CONDITIONS AND LIMITS 2 . EUROPEAN COMMUNITIES - OWN RESOURCES - REPAYMENT OR REMISSION OF IMPORT OR EXPORT DUTIES - REGULATION ( EEC ) NO 1430/79 - RETROACTIVITY - NONE ( COUNCIL REGULATION ( EEC ) NO 1430/79 )