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Chemical forms and sorption of copper and zinc in soils of central Chile
(MARCEL DEKKER INC, 1999)
Concentration and fractionation of Cu, Cr, Ni and Zn in montmorillonitic and allophanic soils: Comparison of two different extraction methods
(IST CHIMICA AGRARIA, UNIV PISA VIA S MICHELE DEGLI SCALZI, 1999-05)
Contenido y fraccionamiento de Cu, Cr, Ni y Zn en suelos montmorilloníticos: comparación entre dos diferentes procedimientos de extracción.
(Universita degli Studi di Pisa, Istituto di Chimica Agraria, 1999)