Changes to Regulation (EEC) No 1203/73 of the Commission of 4 May 1973 fixing the conversion factors to be applied to…
EU Regulation No 1203/1973
Made by Regulation (EEC) No 250/78 amending Regulation (EEC) No 1203/73 fixing the conversion factors to be applied…
From legislation.gov.uk's record of changes, the official one: see it there.