Changes to 83/304/EEC: Commission Decision of 10 June 1983 amending for the third time Decision 82/827/EEC concerning certain measures to prevent the spread of classical swine fever
EU Decision 1983/304
No changes to 83/304/EEC: Commission Decision of 10 June 1983 amending for the third time Decision 82/827/EEC concerning 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.