00709nam a2200193 a 450000100080000000500110000800800410001910000140006024500330007425000220010726000330012930000110016252002500017365000210042365000160044465000110046065000210047165300230049211511402023-01-23       1970    bl uuuu      00u1 u    #d1 aCLARK, C.  aThe economics of irrigation.  a2.ed. rev. e aum.  aOxford: Pergamon Pressc1970  a155 p.  aDefinitions; Water requirements of plants; Economic returns irrigation;  The costs of irrigation: general review, capital costs per hectare irrigated, pumping - primitive methods - power pumping; Water resources; Charges for water; Desalination.  aDessalinização  aIrrigação  aPlanta  aRecurso Hídrico  aAspecto econômico