Coal workers disease
Palabras clave
coal,
men at work,
respiratory,
occupational,
miner,
black,
lung,
dust,
carbon,
exposure,
personal,
disease,
silica,
inhaled,
asbestos,
construction,
grinder,
potter,
rot,
breathe,
chest,
pain,
fiber,
effusion,
coughing,
diagram,
symptom,
pulmonary,
x-ray,
chronic,
vector,
illustration,
healthy
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