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2. Ph's outdated air quality standards may worsen air pollution-related deaths, health risks - groups;Greenpeace Philippines,2021
3. Ph gov't urged: Strengthen air quality monitoring to protect citizens' health;Greenpeace Philippines,2022
4. LoRaWAN-based IoT system implementation for long-range outdoor air quality monitoring;Jabbar;Internet of Things,2022
5. Ambient (outdoor) Air Pollution;World Health Organization. World Health Organization,2022