Changes made by 89/383/EEC: Council Decision of 19 June 1989 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 1989/383
Made to 88/303/EEC: Council Decision of 24 May 1988 recognizing certain parts of the territory of the Community as being either officially swine fever free or swine fever free
From legislation.gov.uk's record of changes, the official one: see it there.