Radon gas testing : a poor indicator of radon daughter exposure

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      <subfield code="a">The problem of residential radon has created a demand for testing services that has been partly met by industrial hygienists. The United States Environmental Protection Agency (EPA), while disavowing responsability or jurisdiction in this matter, has nonetheless published guidelines fro homeowners to use in interpreting test results. These guidelines are based on certains assumptions about the degree of equilibrium between radon gas and its daughters in typical dwellings under closed-house conditions</subfield>
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      <subfield code="a">American Industrial Hygiene Association journal</subfield>
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      <subfield code="g">Vol. 51, nº 11, November 1990 ; p. 581-582</subfield>
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