Track radon in the workplace

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      <subfield code="c">by Mike Clarkin and Bill Brodheah</subfield>
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      <subfield code="a">This invisible killer could be responsible for up to 20.000 lung-cancer deaths, twice as many as environmental tobacco smoke. The issue is not whether a building contains radon, but how high the radon levels are. Once radon reaches the building foundation, there must be openings that will allow it to enter</subfield>
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      <subfield code="t">Safety & health</subfield>
      <subfield code="d">Chicago</subfield>
      <subfield code="g">Vol. 143, nº 5, May 1991 ; p. 42-45</subfield>
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