00621nam a2200217 a 450000100080000000500110000800800410001910000170006024501030007726000690018030000100024965000100025965000100026965000180027965000160029765000170031365300230033065300130035370000180036670000190038411948232006-07-28       1984    bl uuuu     u0uu1 u    #d1 aPERRY, G. M.  aA benefit analysis of underground pipe as a water conservation technique for Texas rice producers.  aCollege Station: The Texas Agricultural Experiment Stationc1984  a16 p.  aÁgua  aArroz  aConservação  aIrrigação  aOryza Sativa  aAspecto econômico  aTécnica1 aRISTER, M. E.1 aGRIFFIN, R. C.