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1.- FLORAL TURNOVER AT THE K/T BOUNDARY; AN ISOTOPIC AND MOLECULAR STUDY FROM THE WESTERN INTERIOR OF NORTH AMERICA GEOLOGICAL SOCIETY OF AMERICA (GSA); BOULDER, CO; USA; UNITED STATES, 2004 GEOLOGICAL SOCIETY OF AMERICA, 2004 ANNUAL MEETING Ver registro
2.- Spore chemistry as a proxy for volcanically-induced atmospheric perturbations IUGG; [location varies]; III; International, 2007 Earth; our changing planet; proceedings of IUGG XXIV general assembly Ver registro
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