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...date=April 10, 2018|work=24Horas.cl|access-date=April 13, 2018|language=es-ES}}</ref>'' The National Seismological Center is housed by the Department of ...CSN}}</ref> The service was the idea of [[:es: Valentín_Letelier|Valentín Letelier]], a former director of the [[University of Chile]]. The first director of ...