Changes made by 91/56/EEC: Commission Decision of 21 January 1991 concerning certain protection measures relating to contagious bovine pleuropneumonia in Italy
EU Decision 1991/56
No changes made by 91/56/EEC: Commission Decision of 21 January 1991 concerning certain protection measures relating to contagious bovine pleuropneumonia in Italy are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.