Changes made by 83/494/EEC: Commission Decision of 27 September 1983 concerning animal health conditions and veterinary certification for the importation of domestic animals of the bovine and porcine species from Canada
EU Decision 1983/494
No changes made by 83/494/EEC: Commission Decision of 27 September 1983 concerning animal health conditions and veterinary certification for the importation of domestic animals of the bovine and porcine species from Canada are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.