Changes made by 91/341/EEC: Council Decision of 20 June 1991 on the adoption of a programme of Community action on the subject of the vocational training of customs officials (Matthaeus programme)
EU Decision 1991/341
No changes made by 91/341/EEC: Council Decision of 20 June 1991 on the adoption of a programme of Community action on the subject of the vocational training of customs officials (Matthaeus programme) are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.