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  • ...rse must be at least 200 km and a maximum of 30% of its length can be on [[asphalt]] roads. American Motorcycle Association rules governing course length and
    21 KB (3,383 words) - 23:52, 15 November 2009
  • * Kay, Jane Holtz, ''Asphalt nation : how the automobile took over America, and how we can take it back'
    29 KB (4,330 words) - 12:07, 23 January 2009
  • * 12 million were ground up and used in rubber-modified asphalt for roads and athletic tracks
    30 KB (4,915 words) - 10:59, 5 March 2017

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