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![](./images/clear.gif) 1.- LEAD ISOTOPE COMPOSITIONS OF ECUADORIAN ORES AND IGNEOUS ROCKS
GEOLOGICAL SOCIETY OF AMERICA (GSA); BOULDER, CO; USA; UNITED STATES, 1995
GEOLOGICAL SOCIETY OF AMERICA, 1995 ANNUAL MEETING
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![](./images/clear.gif) 2.- ND ISOTOPE CONSTRAINTS ON SOURCES OF NEOPROTEROZOIC TO EARLY CAMBRIAN SILICICLASTIC SEDIMENTARY ROCKS IN NORTHERN SONORA
PERGAMON; OXFORD; GBR; UNITED KINGDOM, 2001
GEOLOGY OF NORTHWESTERN MEXICO AND ADJACENT AREAS
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