00665naa a2200157 a 450000100080000000500110000800800410001910000250006024501200008526000090020530000110021465000120022565000130023770000170025077302400026712542232009-03-19       2008    bl uuuu     u00u1 u    #d1 aLIMA FILHO, O. F. de  aCorrelation between two methods for silicon extraction in natural and undisturbed tropical savanna soils of Brazil.  c2008  ap. 64.  aCálcio  aSilício1 aSILVA, W. M.  tIn: SILICON IN AGRICULTURE CONFERENCE, 4., 2008, Wild Coast Sun, Port Edward, Kwa Zulu-Natal, South Africa. [Proceedings...]. Scottsville: University of Kawazulu-Natal; Mount Edgecombe: South African Sugarcane Research Institute, 2008.