Changes to 97/347/EC: Commission Decision of 20 May 1997 on a common technical Regulation for the pan-European integrated services digital network (ISDN) primary rate access
EU Decision 1997/347
The legislation that changes 97/347/EC: Commission Decision of 20 May 1997 on a common technical Regulation for the pan-European integrated services digital network (ISDN) primary rate access, newest first. Choose one to see each change.
From legislation.gov.uk's record of changes, the official one: see it there.