| defra.gov.uk | UK DEFRA Pollution Prevention and Control |
| angelfire.com | The Search for Safer and Greener Chemical Solvents in Surface Cleaning |
| p2ric.org | Pollution Prevention Regional Information Center |
| rubberizedasphalt.org | Rubberized Asphalt Concrete Technology Center (RACTC) |
| pprc.org | Pacific Northwest Pollution Prevention Resource Center |
| geocities.com | Reduce Garbage |
| fau.edu | Pollution Prevention Coalition |
| wm.com | Waste Management Trends and Comments |
| environmental-center.com | Indicators of Pollution Management |
| tfhrc.gov | User Guidelines for Waste and Byproduct Material in Pavement Construction |
Canada , Saskatchewan , Regina