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Critical Mass
Critical Mass is a cycling event typically held on the last Friday of every month; its purpose is not usually formalized beyond the direct action of meeting at a set location and time and traveling as a group through city or town streets on bikes. The event originated in 1992 in San Francisco; by th...
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2017
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| Acceso en línea: | http://cds.cern.ch/record/2270221 |