Changes made by ECSC High Authority: Decision No 31-53 of 2 May 1953 on the publication of price lists and conditions of sale applied by undertakings in the steel industry
EU Decision 1953/31
No changes made by ECSC High Authority: Decision No 31-53 of 2 May 1953 on the publication of price lists and conditions of sale applied by undertakings in the steel industry are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.