radon
as defined in Proposal for a COUNCIL DIRECTIVE laying down basic safety standards for…, Article 4, point (70)
the isotope Rn-222 and its progeny, as appropriate (exposure to radon means exposure to radon progeny)
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Also defined in
- Council Directive 2013/59/Euratom of 5 December 2013 laying down basic safety standards for protection against the… 32013L0059, Article 4, point (82)
the radionuclide Rn-222 and its progeny, as appropriate