Changes to 79/397/EEC: Commission Decision of 29 March 1979 extending the period of application of the systems of authorization for trade in crude oil and/or petroleum products between certain Member States provided for by Decisions 79/126/EEC and 79/135/EEC (Only the French and Dutch texts are authentic)
EU Decision 1979/397
The legislation that changes 79/397/EEC: Commission Decision of 29 March 1979 extending the period of application of the systems of authorization for trade in crude oil and/or petroleum products between certain Member States provided for by Decisions 79/126/EEC and 79/135/EEC (Only the French and Dutch texts are authentic), newest first. Choose one to see each change.
From legislation.gov.uk's record of changes, the official one: see it there.