References
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- McKenna , PB . 1994 . Criteria for diagnosing anthelmintic resistance by the faecal egg count reduction test . New Zealand Veterinary Journal , 42 : 153 – 154 .
- McKenna , PB . 1995 . The identity of nematode genera involved in cases of ovine anthelmintic resistance in the southern North Island of New Zealand . New Zealand Veterinary Journal , 43 : 225 – 227 .