Historia Garaikidea
Saila
Universidad de Caldas
Manizales, ColombiaUniversidad de Caldas-ko ikertzaileekin lankidetzan egindako argitalpenak (1)
1986
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EVENTS LEADING TO COLOMBIA'S RUIZ VOLCANO ERUPTION AND ITS RESULTS DESCRIBED.
Mining Engineering, Vol. 38, Núm. 2, pp. 99-100