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1.- Carbon isotopic ratios of wetland and terrace soil sequences in the Maya Lowlands of Belize and Guatemala Elsevier;; III; International, 2011 Soils, sediments, and geoarchaeology Ver registro
2.- Terra Preta in Maya soils Association of American Geographers; Washington, DC; USA; United States, 2009 Association of American Geographers 2009 annual meeting; abstracts Ver registro
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