Changes made by 91/39/EEC: Commission Decision of 19 December 1990 relating to a proceeding under Article 85 of the EEC Treaty (IV/32.595 - d'Ieteren motor oils) (Only the French and Dutch texts are authentic)
EU Decision 1991/39
No changes made by 91/39/EEC: Commission Decision of 19 December 1990 relating to a proceeding under Article 85 of the EEC Treaty (IV/32.595 - d'Ieteren motor oils) (Only the French and Dutch texts are authentic) are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.