Changes made by 91/189/EEC: Commission Decision of 25 February 1991 establishing the protocols for the standardization of materials and procedures for veterinary tests and the conditions for the approval of markets in connection with the import of domestic animals of the bovine and porcine species from third countries
EU Decision 1991/189
No changes made by 91/189/EEC: Commission Decision of 25 February 1991 establishing the protocols for the standardization of materials and procedures for veterinary tests and the conditions for the approval of markets in connection with the import of domestic animals of the bovine and porcine species from third countries are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.