Changes made by 77/327/EEC: Commission Decision of 19 April 1977 relating to a proceeding under Article 86 of the EEC Treaty (IV/28.841 - ABG/Oil companies operating in the Netherlands)
EU Decision 1977/327
No changes made by 77/327/EEC: Commission Decision of 19 April 1977 relating to a proceeding under Article 86 of the EEC Treaty (IV/28.841 - ABG/Oil companies operating in the Netherlands) are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.