00322naa a2200109 a 450000100080000000500110000800800410001910000200006024500580008026000090013877300650014718223961997-12-11       1997    bl uuuu     u00u1 u    #d1 aCUNHA, G. R. da  aEl Niño & agriculturaba arte de administrar riscos.  c1997  tPlantio Direto, Passo Fundogn. 42, p. 17-21, nov/dez. 1997.