# The Ionising Radiations Regulations 2017, Paragraph 1


Individual serial number of the passbook.

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Source: https://www.legislation.gov.uk/uksi/2017/1075/schedule/5/paragraph/1 (the official version)
Page: https://openlegislation.uk/ionising-radiations-regulations-2017/schedule-5/paragraph-1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.