Voight, Barry The management of volcano emergencies: Nevado del Ruiz - Berlin Springer-Verlag 1996 - pp. 719-769 ilus. Subjects--Topical Terms: MITIGACIONPREVENCIÓN DE DESASTRESRIESGO VOLCANICOVOLCANES Subjects--Geographic Terms: COLOMBIANEVADO DEL RUIZ Universal Decimal Class. No.: 551.21/S27|21