00770nam a2200241 a 450000100080000000500110000800800410001910000180006024500960007826000360017430000100021050000950022052000660031565000220038165000150040365000100041865000210042865000100044965000240045965000160048365000110049970000180051019663942020-02-06       1982    bl uuuu     u0uu1 u    #d1 aHELWEG, O. J.  aAn approach to economic analysis of water resource systems under high rainfall uncertainty.  aPetrolina: EMBRAPA-CPATSAc1982  a10 p.  aTrabalho apresentado no I Simpósio Brasileiro do Trópico Semi-Árido, Olinda, ago. 1982.  aEconomic principles involved; Determining the expected value.  aeconomic analysis  airrigation  aWater  awater management  aÁgua  aAnálise Econômica  aIrrigação  aManejo1 aSHARMA, P. N.