Changes made by Council Directive of 17 May 1979 on the approximation of the laws of the Member States relating to the component type-approval of lighting and light-signalling devices on wheeled agricultural or forestry tractors (79/532/EEC)
EU Directive 1979/532
No changes made by Council Directive of 17 May 1979 on the approximation of the laws of the Member States relating to the component type-approval of lighting and light-signalling devices on wheeled agricultural or forestry tractors (79/532/EEC) are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.