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Multiple Anthelmintic Resistance in Haemonchus Contortus on a Sheep Farm in Kenya
(Kluwer Academic Publishers bv ^ Printed in the Netherlands, 1997)
Multiple resistance to albendazole, thiophanate, levamisole and orally administered ivermectin was detected in an isolate of Haemonchus contortus in sheep on a farm where benzimidazole resistance had already been identi¢ed. ...