Changes made by Council Decision of 27 January 1997 establishing a reciprocal exchange of information and data from networks and individual stations measuring ambient air pollution within the Member States (97/101/EC)
EU Decision 1997/101
No changes made by Council Decision of 27 January 1997 establishing a reciprocal exchange of information and data from networks and individual stations measuring ambient air pollution within the Member States (97/101/EC) are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.