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 Commission Decision of 7 July 1993 amending Decisions 92/265/EEC, 91/449/EEC and 93/199/EEC relating to certain measures concerning the importation into the Community of live pigs, porcine semen, fresh pigmeat and pigmeat products from Austria
From legislation.gov.uk's record of changes, the official one: see it there.