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1.- EVALUATION OF BIOGEOCHEMISTRY AS A TOOL IN MINERAL EXPLORATION AND IN MONITORING ENVIRONMENTAL MERCURY DISPERSION IN THE TAPAJOS GOLD DISTRICT, AMAZONIA, BRAZIL GEOLOGICAL SURVEY OF CANADA; CALGARY, AB; CAN; CANADA, 2000 Ver registro
2.- PHYTOSOCIOLOGICAL AND BIOGEOCHEMICAL OBSERVATIONS ON THE SERPENTINITE VEGETATION OF THE BETIC RIFFIAN ULTRAMAFIC ARC OF SPAIN AND MOROCCO PITAGORA EDITRICE; BOLOGNA; ITA; ITALY, 1995 Ver registro
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