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![](./images/clear.gif) 1.- CARBON-13 VARIATION WITH DEPTH IN SOILS OF BRAZIL AND CLIMATE CHANGE DURING THE QUATERNARY
SPRINGER; BERLIN - SECAUCUS; DEU; FEDERAL REPUBLIC OF GERMANY, 1996
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![](./images/clear.gif) 2.- ISOTOPIC VARIABILITY OF N (SUB 2) O EMISSIONS FROM TROPICAL FOREST SOILS
AMERICAN GEOPHYSICAL UNION; WASHINGTON, DC; USA; UNITED STATES, 2000
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