Changes made by 91/50/EEC: Commission Decision of 16 January 1991 relating to a proceeding under Article 85 of the EEC Treaty (IV/32.732 - IJsselcentrale and others) (Only the Dutch text is authentic)
EU Decision 1991/50
No changes made by 91/50/EEC: Commission Decision of 16 January 1991 relating to a proceeding under Article 85 of the EEC Treaty (IV/32.732 - IJsselcentrale and others) (Only the Dutch text is authentic) are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.