Үүнийг авах : The Eruption of Nevado del Ruiz volcano, Colombia, South America, November 13, 1985 [electronic resource] / prepared by Dennis S. Mileti ... [et al.] for Committee on Natural Disasters, Division of Natural Hazard Mitigation, Commission on Engineering and Technical Systems, National Research Council.

Гарчиг : The Eruption of Nevado del Ruiz volcano, Colombia, South America, November 13, 1985 [electronic resource] / prepared by Dennis S. Mileti ... [et al.] for Committee on Natural Disasters, Division of Natural Hazard Mitigation, Commission on Engineering and Technical Systems, National Research Council.

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