Changes made by 74/77/ECSC: Commission Decision of 22 January 1974 authorizing an agreement between British steelmaking undertakings for the establishment of a joint buying agency for ferrous scrap and other steelmaking materials (Only the English text is authentic)
EU Decision 1974/77
No changes made by 74/77/ECSC: Commission Decision of 22 January 1974 authorizing an agreement between British steelmaking undertakings for the establishment of a joint buying agency for ferrous scrap and other steelmaking materials (Only the English text is authentic) are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.