Changes to 78/693/EEC: Commission Decision of 28 July 1978 concerning animal health conditions and veterinary certification for imports of fresh meat from Argentina
EU Decision 1978/693
Made by 85/414/EEC: Commission Decision of 29 July 1985 concerning animal health conditions and veterinary certification for imports of fresh meat from certain third countries
From legislation.gov.uk's record of changes, the official one: see it there.