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2. Amin, O.M. (1985) Classification. In: Crompton D.W.T. & Nickol, B.B. (Eds) Biology of the Acanthocephala. Cambridge: Cambridge University Press, pp. 27–72.
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5. Baker, A.J. (1974) Ecological and behavioural evidence for the systematic status of New Zealand oystercatchers (Charadriiformes: Haematopodidae). Royal Ontario Museum Live Sciences Contribution, 96, 34pp.