Changes to 83/637/EEC: Commission Decision of 12 December 1983 amending Commission Decision 81/135/EEC establishing that the apparatus described as 'EG and G PAR-OMA 2 System' may not be imported free of Common Customs Tariff duties
EU Decision 1983/637
No changes to 83/637/EEC: Commission Decision of 12 December 1983 amending Commission Decision 81/135/EEC establishing that the apparatus described as 'EG and G PAR-OMA 2 System' may not be imported free of Common Customs Tariff duties are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.