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| Cleaner and Greener Environment Program dedicated to reducing pollution through awareness and information, publications, projects and resources. | |
| Allowable (Legal) Limits for Carbon Monoxide List of the legal limits of carbon monoxide exposure as determined by different organization around the world. | ||
| Carbon Dioxide Information Analysis Center The primary global-change data and information analysis center of the US Department of Energy. | ||
| Greening Earth Society (GES) Promoter of the scientific view that CO2 is beneficial to humankind and nature, providing information about CO2 and fossil fuels. | ||
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