Changes to 91/449/EEC: Commission Decision of 26 July 1991 laying down the specimen animal health certificates in respect of meat products imported from third countries
EU Decision 1991/449
Made by 96/92/EC: Commission Decision of 11 January 1996 amending Decision 91/449/EEC laying down the specimen animal health certificates in respect of meat products imported from third countries, to take account of certain products imported from Uruguay
From legislation.gov.uk's record of changes, the official one: see it there.