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- Did removing lead from petrol spark a decline in crime? http://www.bbc.com/news/magazine-27067615 270 comments
- Did removing lead from petrol spark a decline in crime? http://www.bbc.com/news/magazine-27067615 78 comments science
- BBC - Did removing lead from petrol spark a decline in crime? http://www.bbc.co.uk/news/magazine-27067615 17 comments science
- Did removing lead from petrol spark a decline in crime? http://www.bbc.co.uk/news/magazine-27067615 3 comments worldnews