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indoor air pollution

Update news indoor air pollution

Hanoi’s residents alarmed at indoor air pollution
Vietnamnet global

Hanoi’s residents alarmed at indoor air pollution

Outdoor air pollution is considered a major factor leading to increased indoor air pollution in Hanoi.

Hanoi’s residents alarmed at indoor air pollution
Vietnamnet global

Hanoi’s residents alarmed at indoor air pollution

Outdoor air pollution is considered a major factor leading to increased indoor air pollution in Hanoi.