Subjects: *Particulate matter; *Gases; *Nitrogen oxidesEcuador
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Subjects: *Indoor air pollution prevention; *Petroleum; *GasesIndia; Guatemala; Peru
Subjects: *Environmental monitoring; *Decontamination (From gases, chemicals, etc.); *Hazardous substancesUnited States
Subjects: *Air conditioning; *Greenhouse gases; *Hazardous substance release
Subjects: *Air pollution; *Air filters; *CarbonGuatemala; India; Peru
Subjects: *Agricultural laborers; *Environmental health; *EpidemiologyCosta Rica
Subjects: *Water pollution; *Decontamination (From gases, chemicals, etc.); *OceanSouthern States
Subjects: *Pollutants; *Pesticides; *Decontamination (From gases, chemicals, etc.)
Subjects: *Air pollution; *Particulate matter; *Gases
Subjects: *Climate change; *Environmental health; *Greenhouse effect