Acquired immunity against Cooperia spp. and Ostertagia spp. in calves: effect of level of exposure and timing of the midsummer increase

Author: Ploeger H.W.   Kloosterman A.   Rietveld F.W.  

Publisher: Elsevier

ISSN: 0304-4017

Source: Veterinary Parasitology, Vol.58, Iss.1, 1995-05, pp. : 61-74

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Abstract