Changes made by 79/20/EEC: Commission Decision of 5 December 1978 completing Commission Decision 77/373/EEC excluding from admission free of Common Customs Tariff duties the scientific apparatus described as 'Precision lock-in amplifier' , PAR, model 124A with plug-in preamplifier, PAR, model 116
EU Decision 1979/20
The legislation 79/20/EEC: Commission Decision of 5 December 1978 completing Commission Decision 77/373/EEC excluding from admission free of Common Customs Tariff duties the scientific apparatus described as 'Precision lock-in amplifier' , PAR, model 124A with plug-in preamplifier, PAR, model 116 changes, newest first. Choose one to see each change.
From legislation.gov.uk's record of changes, the official one: see it there.