Changes made by 75/74/EEC: Commission Decision of 19 December 1974 relating to a proceeding under Article 85 of the EEC Treaty (IV/560 - Duro-Dyne - Europair) (Only the English and French texts are authentic)
EU Decision 1975/74
No changes made by 75/74/EEC: Commission Decision of 19 December 1974 relating to a proceeding under Article 85 of the EEC Treaty (IV/560 - Duro-Dyne - Europair) (Only the English and French texts are authentic) are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.