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 79/690/EEC: Commission Decision of 20 July 1979 amending Decisions 78/693/EEC, 78/694/EEC, 78/695/EEC and 79/238/EEC concerning the health conditions for imports of fresh meat from Argentina, Brazil, Uruguay and Paraguay
From legislation.gov.uk's record of changes, the official one: see it there.