Changes to 80/373/EEC: Commission Decision of 31 March 1980 extending the period of application of the system of authorization for trade in crude oil and/or petroleum products between Italy and other Member States provided for by Decision 79/589/EEC (Only the Italian text is authentic)
EU Decision 1980/373
No changes to 80/373/EEC: Commission Decision of 31 March 1980 extending the period of application of the system of authorization for trade in crude oil and/or petroleum products between Italy and other Member States provided for by Decision 79/589/EEC (Only the Italian text is authentic) are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.