Changes made by 78/360/EEC: Commission Decision of 31 March 1978 authorizing certain Member States to sell butter at a reduced price in the form of concentrated butter (Only the German, French and Dutch texts are authentic)
EU Decision 1978/360
No changes made by 78/360/EEC: Commission Decision of 31 March 1978 authorizing certain Member States to sell butter at a reduced price in the form of concentrated butter (Only the German, French and Dutch texts are authentic) are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.