00460nam a2200169 a 450000100080000000500110000800800410001910000170006024500750007726000590015230000090021165300130022065300190023365300140025265300130026665300110027910138962000-08-15       1988    bl uuuu     u0uu1 u    #d1 aVIEIRA, L.G.  aExtensao ruralborigem, evolucao, conceituacao, filosofia, principios.  aRecife: Universidade Federal Rural de Pernambucoc1988  a35p.  aEVOLUCAO  aEXTENSAO RURAL  aFILOSOFIA  aHISTORIA  aORIGEM