00787naa a2200265 a 450000100080000000500110000800800410001910000170006024501480007726000090022565000080023465000110024265000310025365000180028465000100030265000190031265000130033165000190034465000290036365000150039265000100040770000240041770000170044177300630045821180862020-01-03       1998    bl uuuu     u00u1 u    #d1 aSILVA, W. W.  aNatural evolution of gastrointestinal nematodes in goats ( Capra hircus) in the semi-arid ecosystem of Paraiban backwoods, northeastern Brazil.  c1998  aAge  aBrazil  aGastrointestinal nematodes  aGoat diseases  aGoats  aSemiarid zones  aCaatinga  aDoença Animal  aHelminto Gastrintestinal  aNematóide  aOvino1 aBEVILAQUA, C. M. L.1 aCOSTA, A. L.  tVeterinary Parasitologygv. 80, n. 1, p. 47-52, Dec. 1998.