Changes to Regulation (EEC) No 232/75 of the Commission of 30 January 1975 on the sale of butter at reduced prices for…
EU Regulation No 232/1975
Made by Regulation (EEC) No 2379/77 amending Regulation (EEC) No 232/75 as regards the sale of butter at reduced…
From legislation.gov.uk's record of changes, the official one: see it there.