Preston, J M The influence of breed on the susceptibility of sheep and goats to a single experimental infection with Haemonchus contortus. [electronic resource] - The Veterinary record Dec 1978 - 509-12 p. digital Publication Type: Comparative Study; Journal Article ISSN: 0042-4900 Standard No.: 10.1136/vr.103.23.509 doi Subjects--Topical Terms: AnimalsBreedingFeces--parasitologyGoatsHaemonchiasis--geneticsParasite Egg CountSheepSheep Diseases--geneticsTrichostrongyloidiasis--veterinary