No abstract available
MeSH terms
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Air Pollutants
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Chemical Industry*
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Environmental Exposure
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Gases
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Humans
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Maximum Allowable Concentration
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Nitrates / pharmacology*
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Nitrogen Oxides / pharmacology*
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Oral Health*
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Tooth / drug effects*
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USSR
Substances
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Air Pollutants
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Gases
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Nitrates
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Nitrogen Oxides