PELs, RELs and TLVs still cause problems

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<namePart>Castelli, Jim</namePart>
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<abstract displayLabel="Summary">OSHA's request for conformance to permissible exposure limits intensifies an already heated controversy. This article contains: debate may intensify; mixed reactions to PELs; standards differ; difference not great; new PELs to come; legal considerations; funding sources scarce</abstract>
<note type="statement of responsibility">by Jim Castelli</note>
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<namePart>American Conference of Governmental Industrial Hygienists</namePart>
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<topic>Higiene industrial</topic>
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<topic>Contaminantes químicos</topic>
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<text>Vol. 143, nº 4, April 1991 ; p. 38-41</text>
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