Variability in protection afforded by half-mask respirators against styrene exposure in the field

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      <subfield code="a">Variability in protection afforded by half-mask respirators against styrene exposure in the field</subfield>
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      <subfield code="a">Concentrations of styrene were measured in the breathing zone and inside the facepiece of air-purifying half-mask respirators of 13 workers for three to six 1 hr periods while they were engaged in the production of fiberglass-reinforced products. These data were used to estimate the protection afforded by the respirators</subfield>
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      <subfield code="a">American Industrial Hygiene Association journal</subfield>
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      <subfield code="t">American Industrial Hygiene Association journal</subfield>
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      <subfield code="g">Vol. 51, nº 12, December 1990 ; p. 625-631</subfield>
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