Changes made by 77/129/EEC: Commission Decision of 21 December 1976 relating to a proceeding under Article 85 of the EEC Treaty (IV/28.812 Theal/Watts) (Only the English and Dutch texts are authentic)
EU Decision 1977/129
No changes made by 77/129/EEC: Commission Decision of 21 December 1976 relating to a proceeding under Article 85 of the EEC Treaty (IV/28.812 Theal/Watts) (Only the English and Dutch texts are authentic) are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.