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Spectroscopy characterization of humic acids isolated from Amazonian dark earth soils (Terra Preta de Índio).
(In: WOODS, W. I.; TEIXEIRA, W. G.; LEHMAN, J.; STEINER, C. WINKLERPRINS, A.; REBELLATO, L. (Ed.). Amazonian dark earths: wim sombroek's vision. Berlin: Springer, 2009., 2011)
Use of charcoal and wood carbonization by-products in agriculture: learning with "terra preta de indio".
(In: INTERNATIONAL AGRICHAR INITIATIVE (IAI) 2007 CONFERENCE, 2007, Terrigal, Australia. [Abstracts]. Terrigal: IAI, 2007., 2014)