Changes to 89/20/EEC: Council Decision of 14 December 1988 amending Decision 88/303/EEC recognizing certain parts of the territory of the Community as being either officially swine-fever free or swine-fever free
EU Decision 1989/20
No changes to 89/20/EEC: Council Decision of 14 December 1988 amending Decision 88/303/EEC recognizing certain parts of the territory of the Community as being either officially swine-fever free or swine-fever free are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.