Articles In Academic Journals

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Year	Title
2004	Caracterizacao Espectroscópica da Matéria Organica do Solo..  Embrapa Instrumentacao Agropecuária. Circular Técnica.
2002	Studies of Humic Fractions from a Mollisol Soil.  World. 196.

Conference Papers

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Year	Title
2005	Isolation and Characterization of Humic Acids from" slickspot" Soils.  54.
2004	Isolation and Characterization of Humic Substances from Soils Collected at Juniper Butte Range, Idaho.  175-177.
2003	Chemistry of Humic Substances in Irish Soils