"वायुमालिन्यम्" इत्यस्य संस्करणे भेदः
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पङ्क्तिः ११:
* [http://ec.europa.eu/environment/air/index.htm European Commission > Environment > Policies > Air >Air Quality].
* [http://www.unep.org/pcfv/ UNEP Partnership for Clean Fuels and Vehicles]
* [http://www.who.int/phe/health_topics/outdoorair/databases/en/index.html Database: outdoor air pollution in cities] from the
* [http://www.npr.org/2011/11/07/142089991/poisoned-places-air-pollution-in-your-town Interactive map of US facilities emitting air pollution]
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