Changes to 71/237/Euratom: Council Decision of 21 June 1971 adopting a five-year research and training programme of the European Atomic Energy Community in the field of fusion and plasma physics
EU Decision 1971/237
Made by Council Decision of 14 May 1973 amending the Decision of 21 June 1971 adopting a five-year research and training programme of the European Atomic Energy Community in the field of fusion and plasma physics
From legislation.gov.uk's record of changes, the official one: see it there.