No abstract available
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Air Pollutants, Occupational / adverse effects
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Air Pollutants, Occupational / analysis*
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Coal Mining
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Dust / adverse effects
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Dust / analysis*
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Humans
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Occupational Medicine / instrumentation*
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Particle Size
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Spectrum Analysis / instrumentation*
Substances
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Air Pollutants, Occupational
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Dust