How to monitor employee hearing levels

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      <subfield code="a">How to monitor employee hearing levels</subfield>
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      <subfield code="a">Test employees to determine if it's time to introduce or update hearing protection. This article treats: test their hearing; improved techniques; what's available; how to choose; and includes: measure sound levels in the workplace</subfield>
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      <subfield code="g">Vol. 143, nº 2, February 1991 ; p. 56-57</subfield>
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