Changes made by 80/344/EEC: Council Decision of 18 March 1980 adopting a second research programme in the field of medical and public health research, consisting of four multiannual concerted projects
EU Decision 1980/344
No changes made by 80/344/EEC: Council Decision of 18 March 1980 adopting a second research programme in the field of medical and public health research, consisting of four multiannual concerted projects are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.