Changes to 77/437/ECSC: Commission Decision of 17 June 1977 renewing its authorization of an agreement between United Kingdom steelmaking undertakings concerning a joint buying agency for steelmaking materials (Only the English text is authentic)
EU Decision 1977/437
No changes to 77/437/ECSC: Commission Decision of 17 June 1977 renewing its authorization of an agreement between United Kingdom steelmaking undertakings concerning a joint buying agency for steelmaking materials (Only the English text is authentic) are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.