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RT @SCPHRP: Utility of bicycle commute route of lower proximity to traffic in decreasing exposure to ultra-fine particles http://t.co/1Wnad3CmRN
RT @SCPHRP: Utility of bicycle commute route of lower proximity to traffic in decreasing exposure to ultra-fine particles http://t.co/1Wnad3CmRN
Utility of bicycle commute route of lower proximity to traffic in decreasing exposure to ultra-fine particles http://t.co/1Wnad3CmRN
Less dust, soot, stink: Benefit of #cycling not near cars, as measured by experiment. http://t.co/LmxUu8vKwC