
Keywords: بیماری مزمن انسدادی ریه; CO; Carbon monoxide; CO2; Carbon dioxide; COPD; chronic obstructive pulmonary disease; JCF; Jharia Coal Fields; km; kilometre; PAH; polycyclic aromatic hydrocarbon; PM; Particulate Matter; PM10; Particulate Matter with aerodynamic diameter less than 10Â Î