Changes made by Council Decision of 14 May 1973 adopting a research programme for the European Economic Community in the field of standards and reference substances (certified reference substances)
EU Decision 1973/125
No changes made by Council Decision of 14 May 1973 adopting a research programme for the European Economic Community in the field of standards and reference substances (certified reference substances) are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.