00532naa a2200157 a 450000100080000000500110000800800410001910000200006024501340008026000090021470000240022370000200024770000200026770000200028777300670030710264202008-11-25       2008    bl ---       0--  u    #d1 aFERREIRA, E. C.  aArtificial neural network for Cu quantitative determination in soil using a portable laser induced breakdown spectroscopy system.  c20081 aMILORI, D. M. B. P.1 aFERREIRA, E. J.1 aSILVA, R. M. da1 aMARTIN-NETO, L.  tSpectrochimica acta part B, Oxfordgv. 63, p. 1216-1220, 2008.