Changes made by 79/837/EEC: Commission Decision of 25 September 1979 laying down the methods of control for maintaining the officially brucellosis-free status of bovine herds in Denmark (Only the Danish text is authentic)
EU Decision 1979/837
No changes made by 79/837/EEC: Commission Decision of 25 September 1979 laying down the methods of control for maintaining the officially brucellosis-free status of bovine herds in Denmark (Only the Danish text is authentic) are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.