Changes made by Commission Directive 97/53/EC of 11 September 1997 adapting to technical progress Council Directive 79/196/EEC on the approximation of the laws of the Member States concerning electrical equipment for use in potentially explosive atmospheres employing certain types of protection
EU Directive 1997/53
The legislation Commission Directive 97/53/EC of 11 September 1997 adapting to technical progress Council Directive 79/196/EEC on the approximation of the laws of the Member States concerning electrical equipment for use in potentially explosive atmospheres employing certain types of protection changes, newest first. Choose one to see each change.
From legislation.gov.uk's record of changes, the official one: see it there.