Vol. 32 No. 122 (2008)

Earth Sciences

Jaime Galvis Vergara , Alcides Huguett Granados, Javier Pomares A
CENOZOIC VOLCANIC ROCKS IN CERREJÓN AREA, PERIJÁ RANGE, GUAJIRA DEPARTMENT COLOMBIA
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Joaquín Pelkowski
25-35
INSOLATION AT THE EARTH'S SURFACE
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