00623nam a2200193 a 450000100080000000500110000800800410001910000090006024500550006926000150012430000100013949000460014950000770019552001010027265000150037365000130038865000160040165300120041711432272015-09-01       1980    bl uuuu      00u1 u    #d1 aFAO.  aDrainage design factorsb28 questions and answers.  aRomec1980  a52 p.  a(FAO. Irrigation and Drainage Paper, 38).  aBased on the expert consultation on drainage design factors, Rome, 1979.  aDrainage investigations; Design criteria and parameters; Engineering; Maintenance; Cost factors.  aIrrigation  aDrenagem  aIrrigação  aProjeto