Changes made by 88/256/EEC: Commission Decision of 29 March 1988 amending Decision 87/257/EEC concerning the establishments in the United States of America from which Member States may authorize the importation of fresh meat
EU Decision 1988/256
No changes made by 88/256/EEC: Commission Decision of 29 March 1988 amending Decision 87/257/EEC concerning the establishments in the United States of America from which Member States may authorize the importation of fresh meat are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.