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1.- CHANGES IN THE OCCURRENCE OF HEAVY METALS IN THE TROPICAL ATMOSPHERE DURING THE PAST 22,000 YEARS AS RECORDED IN BOLIVIAN ICE CORE EDP SCIENCES; LES ULIS; FRA; FRANCE, 2003 PROCEEDINGS XIITH INTERNATIONAL CONFERENCE ON HEAVY METALS IN THE ENVIRONMENT; VOLUME I Ver registro
2.- PB AND SR ISOTOPES FROM AN ICE-CORE PROVIDES EVIDENCE FOR CHANGING ATMOSPHERIC CONDITIONS AT THE SAJAMA ICECAP, SOUTH AMERICA EDP SCIENCES; LES ULIS; FRA; FRANCE, 2003 XIITH INTERNATIONAL CONFERENCE ON HEAVY METALS IN THE ENVIRONMENT; VOLUME II Ver registro
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