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1.- THE ERUPTION OF 1968 AND TEPHRA STRATIGRAPHY OF ARENAL VOLCANO UNIVERSITY OF TEXAS PRESS; AUSTIN, TX; USA; UNITED STATES, 1994 ARCHAEOLOGY, VOLCANISM, AND REMOTE SENSING IN THE ARENAL REGION, COSTA RICA Ver registro
2.- VARIABILITY IN BIOTITE COMPOSITION AMONG FOUR ORDOVICIAN TEPHRAS, AND COMPARISON WITH CENOZOIC VOLCANIC BIOTITES TO CONSTRAIN TECTONOMAGMATIC SETTING GEOLOGICAL SOCIETY OF AMERICA (GSA); BOULDER, CO; USA; UNITED STATES, 2004 GEOLOGICAL SOCIETY OF AMERICA, 2004 ANNUAL MEETING Ver registro
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