00670naa a2200229 a 450000100080000000500110000800800410001910000190006024500540007926000090013365000100014265000130015265000270016565300170019265300270020965300310023670000160026770000170028370000170030070000180031777301050033515289092002-11-27       2000    bl uuuu     u00u1 u    #d1 aHOWELLS, K. L.  aGenetic resiatnce to internal parasites in lambs.  c2000  aOvino  aParasito  aResistência Genética  aEndoparasito  aMelhoramento genético  aNematódeo gastrintestinal1 aWOLF, B. T.1 aHARESING, W.1 aLEWIS, R. M.1 aDAVIES, M. H.  tIn: BRITISH SOCIETY OF ANIMAL SCIENCE, 2000, Scarborough, UK. Proceedings... Medlothian, 2000. p.64.