Changes made by 78/992/EEC: Commission Decision of 21 November 1978 allowing admission free of Common Customs Tariff duties of scientific apparatus described as 'Hitachi scanning electron microscope, model S-550' with a transmitted electron image device (model S-5040) and a specimen cooling device (model HX-CS 2)
EU Decision 1978/992
No changes made by 78/992/EEC: Commission Decision of 21 November 1978 allowing admission free of Common Customs Tariff duties of scientific apparatus described as 'Hitachi scanning electron microscope, model S-550' with a transmitted electron image device (model S-5040) and a specimen cooling device (model HX-CS 2) are recorded.
From legislation.gov.uk's record of changes, the official one: see it there.