00506nam a2200205 a 450000100080000000500110000800800410001910000140006024500270007426000290010130000090013052000620013965000160020165000140021765000150023165000160024665000150026265300110027765300120028812711742008-07-21       1989    bl uuuu     u0uu1 u    #d1 aALVES, E.  aDifusao de tecnologia.  aBrasilia: CODEVASFc1989  a19p.  aDifusao de tecnologia; Os sistemas tradicional e moderno;  aagriculture  adiffusion  atechnology  aAgricultura  aTecnologia  aBrasil  aDifusao