Changes made by 74/17/EEC: Commission Decision of 21 December 1973 relating to a proceeding under Article 85 of the EEC Treaty (IV/795 - Kali und Salz/Kali Chemie) (Only the German text is authentic)
EU Decision 1974/17
No changes made by 74/17/EEC: Commission Decision of 21 December 1973 relating to a proceeding under Article 85 of the EEC Treaty (IV/795 - Kali und Salz/Kali Chemie) (Only the German text is authentic) are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.