Changes made by 84/656/EEC: Council Decision of 18 December 1984 extending the collection of information concerning the activities of carriers participating in cargo liner traffic in certain areas of operation
EU Decision 1984/656
Made to 82/870/EEC: Council Decision of 16 December 1982 extending the collection of information concerning the activities of carriers participating in cargo liner traffic in certain areas of operation, carried out under Decisions 79/4/EEC, 80/1181/EEC and 81/189/EEC
From legislation.gov.uk's record of changes, the official one: see it there.