00712nam a2200217 a 450000100080000000500110000800800410001910000200006024500790008026000310015930000090019052001340019965000160033365300110034965300130036065300210037365300160039470000170041070000440042770000230047112649221994-01-31       1992    bl uuuu      00u1 u    #d1 aSILVA, A. de S.  aSustainabele development for the brazilian semi-arid region; a case study.  aPetrolina :CID 1992.c1992  a58p.  aAgro-socio-economic diagnose; Strategy for sustainable developmente as appopriate response to the problems of  semi-arid regions;  aAgricultura  aBrasil  aNordeste  aRegiao semiarida  aSustentavel1 aPORTD, E. R.1 aOLIVEIRA, F. Z. de MAYORGA, M. I. de O.1 aCOUTINHO, S. F. S.