References
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- McKenna , PB . 1994 . The occurrence of anthelmintic-resistant sheep nematodes in the southern North Island of New Zealand . New Zealand Veterinary Journal , 42 : 15l – 152 .
- West , DM , Pomroy , WE , Probert , AD and Charleston , WAG . 1989 . Multigeneric resistance to benzimidazole anthelmintics in four sheep flocks . New Zealand Veterinary Journal , 37 : 76 – 78 .
- McKenna , PB . 1994 . Criteria for diagnosing anthelmintic resistance by the faecal egg count reduction test . New Zealand Veterinary Journal , 42 : 153 – 154 .
- Charleston , WAG . 1982 . An introduction to gastrointestinal nematode parasites of sheep and cattle in New Zealand , Pp 5 – 10 . Animal Industries Workshop, Lincoln College .