00754nam a2200265 a 450000100080000000500110000800800410001910000150006024500320007526000830010730000100019052001410020065000090034165000150035065000100036565000100037565000160038565300150040165300150041665300120043165300120044365300080045565300080046370000170047112608821993-04-12       1978    bl uuuu      00u1 u    #d1 aBOS, M. G.  aOn irrigation efficiencies.  aWageninger: International Institute for land Reclamation and Improvementc1978  a138p.  aDefinition of the problem; Method of investigation applied; Data processing; Some results not directly related to irrigation efficiency.  aarea  airrigation  awater  aÁgua  aIrrigação  aEfficiency  aEficiencia  aSistema  aSystems  aUse  aUso1 aNUGTEREN, J.