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Message * Articles On Geology Of Colombia, including Nevado Del Ruiz, Galeras, Chiles (volcano), Nevado Del QuindÃo, Nevado Del Tolima, Santa Isabel (volcano), Cerro Bravo, Cerro MachÃn, Nevado Del Huila, Puracé, Azufral, Cumbal Volcano - 1244531782 - 9781244531789