Changes made by 84/39/EEC: Commission Decision of 13 January 1984 laying down certain measures to prevent the spread of avian influenza
EU Decision 1984/39
No changes made by 84/39/EEC: Commission Decision of 13 January 1984 laying down certain measures to prevent the spread of avian influenza are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.