Changes made by 78/889/EEC: Council Decision of 9 October 1978 adopting a European Economic Community joint project in the field of physico-chemical behaviour of atmospheric pollutants
EU Decision 1978/889
No changes made by 78/889/EEC: Council Decision of 9 October 1978 adopting a European Economic Community joint project in the field of physico-chemical behaviour of atmospheric pollutants are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.