Changes made by Commission Directive 77/102/EEC of 30 November 1976 adapting to technical progress Council Directive 70/220/EEC of 20 March 1970 on the approximation of the laws of the Member States relating to measures to be taken against air pollution by gases from positive- ignition engines of motor vehicles
EU Directive 1977/102
No changes made by Commission Directive 77/102/EEC of 30 November 1976 adapting to technical progress Council Directive 70/220/EEC of 20 March 1970 on the approximation of the laws of the Member States relating to measures to be taken against air pollution by gases from positive- ignition engines of motor vehicles are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.