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	1.	Resistance of field isolates of Trichostrongylus colubriformis and Ostertagia circumcincta to ivermectin. [electronic resource] by Gopal, R M Pomroy, W E West, D M Producer: 19990812 In: International journal for parasitology vol. 29 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	2.	Efficacy of abamectin against ivermectin-resistant strain of Trichostrongylus colubriformis in sheep. [electronic resource] by Gopal, R M Sandhu, K S Sidhu, P K Producer: 20040826 In: Veterinary parasitology vol. 121 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	3.	The difference in efficacy of ivermectin oral, moxidectin oral and moxidectin injectable formulations against an ivermectin-resistant strain of Trichostrongylus colubriformis in sheep. [electronic resource] by Gopal, R M West, D M Pomroy, W E Producer: 20050922 In: New Zealand veterinary journal vol. 49 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)

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