Changes made by 90/161/EEC: Commission Decision of 30 March 1990 concerning certain protection measures relating to classical swine fever in Belgium
EU Decision 1990/161
No changes made by 90/161/EEC: Commission Decision of 30 March 1990 concerning certain protection measures relating to classical swine fever in Belgium are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.