Changes made by 89/531/EEC: Council Decision of 25 September 1989 designating a reference laboratory for the identification of foot-and-mouth disease virus and determining the functions of that laboratory
EU Decision 1989/531
No changes made by 89/531/EEC: Council Decision of 25 September 1989 designating a reference laboratory for the identification of foot-and-mouth disease virus and determining the functions of that laboratory are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.