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Behnke, J.M. and Gilbert, F.S. and Zain, S.N.M. and Lewis, J.W. (1999) Helminth infections in apodemus sylvaticus in southern England: interactive effects of host age, sex and year on the prevalence and abundance of infections. Journal of Helminthology, 73 (1). pp. 31-44. ISSN 0022-149X,