Changes made by 77/803/EEC: Council Decision of 20 December 1977 on action by the European Social Fund for migrant workers
EU Decision 1977/803
No changes made by 77/803/EEC: Council Decision of 20 December 1977 on action by the European Social Fund for migrant workers are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.