Changes made by 91/344/EEC: Commission Decision of 17 June 1991 amending Decision 87/257/EEC as regards the list of establishments in the United States of America approved for the purpose of importing fresh meat into the Community
EU Decision 1991/344
No changes made by 91/344/EEC: Commission Decision of 17 June 1991 amending Decision 87/257/EEC as regards the list of establishments in the United States of America approved for the purpose of importing fresh meat into the Community are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.