Changes to 77/293/EEC: Commission Decision of 18 April 1977 amending the Commission Decision of 30 March 1977 on certain measures to prevent the spread of classical swine fever
EU Decision 1977/293
No changes to 77/293/EEC: Commission Decision of 18 April 1977 amending the Commission Decision of 30 March 1977 on certain measures to prevent the spread of classical swine fever are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.