00627naa a2200217 a 450000100080000000500110000800800410001910000200006024500970008026000090017765000110018665000090019765000100020665000090021665300180022570000180024370000200026170000220028170000220030377300840032513692992016-04-29       1996    bl ---       0--  u    #d1 aABREU, J. C. de  aDefficiency of multinutrient extractants for the determination of available copper in soils.  c1996  acopper  asoil  aCobre  aSolo  aDetermination1 aRAIJ, B. van.1 aABREU, M. F. de1 aSANTOS, W. R. dos1 aANDRADE, J. C. de  tCommunications of Soil Science Plant Analiticgv. 27, n. 3/4, p. 763-771, 1996.