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1.- ISOTOPE HYDROLOGICAL STUDY ON THE ORIGIN AND AGE OF DEEP GROUNDWATER IN THE SEMI-ARID CHACO BOREAL, SOUTH AMERICA INTERNATIONAL ATOMIC ENERGY AGENCY; VIENNA; III; INTERNATIONAL, 1998 ISOTOPE TECHNIQUES IN THE STUDY OF ENVIRONMENTAL CHANGE; PROCEEDINGS Ver registro
2.- SOIL FORMATION AND QUATERNARY GEOLOGY OF THE PARAGUAYAN CHACO-THEMATIC MAPPING 2000 GEOSCIENTIFIC COOPERATION WITH LATIN AMERICA Ver registro
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