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Occupational Exposure
Respiration Disorders
Occupational Diseases
Carbon
Air Pollutants, Occupational
Anhydrides
Pyrenes
Phthalic Anhydrides
Maleic Anhydrides
Polycyclic Compounds
Occupations
Environmental Monitoring
Dust
Coal
Europe
Chemical Industry
Cohort Studies
Cross-Sectional Studies
Analysis of Variance
Retrospective Studies
Co-Publications
14
12
4
3
2
1
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