Changes made by 75/441/EEC: Council Decision of 24 June 1975 establishing a common procedure for the exchange of information between the surveillance and monitoring networks based on data relating to atmospheric pollution caused by certain compounds and suspended particulates
EU Decision 1975/441
No changes made by 75/441/EEC: Council Decision of 24 June 1975 establishing a common procedure for the exchange of information between the surveillance and monitoring networks based on data relating to atmospheric pollution caused by certain compounds and suspended particulates are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.