Changes made by 93/531/EEC: Commission Decision of 15 October 1993 concerning certain protection measures relating to African swine fever in Portugal
EU Decision 1993/531
No changes made by 93/531/EEC: Commission Decision of 15 October 1993 concerning certain protection measures relating to African swine fever in Portugal are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.