00470nam a2200181 a 450000100080000000500110000800800410001910000150006024500880007526000320016330000090019565000100020465000100021465000100022465300140023465300130024865300270026111602702017-12-29       1976    bl uuuu     u0uu1 u    #d1 aLIU, W. T.  aLand and water management of dryland farming system research in Northeasten Brazil.  a[S.l.]: [s.n.], 1976.c1976  a7 p.  aWater  aÀgua  aTerra  aGerência  aNordeste  aSistema de agricultura