00600nam a2200205 a 450000100080000000500110000800800410001910000160006024501220007626000490019830000100024765000110025765000330026865000130030165000140031465000110032865000140033965300310035365300100038410185762016-11-28       2010    bl uuuu     u00u1 u    #d1 aMEDEROS, A.  aEpidemiological studies of gastrointestinal nematodes in sheep flocks in ontario and Quebec, Canadábtesis doctoral.  aGuelph (Canadá): University of Guelphc2010  a219 p  aCANADA  aENFERMEDADES DE LOS ANIMALES  aNEMATODA  aNEMATODOS  aOVINOS  aPARASITOS  aGASTROINTESTINAL NEMATODES  aSHEEP