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4. Trichostrongylus colubriformis and Ostertagia sp resistant to levamisole, morantel tartrate and thiabendazole: infectivity, pathogenicity and drug efficacy in two breeds of sheep. Sangster NC, Kelly JD, Whitlock HV, Gunawan M, Porter CJ. Res Vet Sci; 1980 Jul; 29(1):26-30. PubMed ID: 7455350 [Abstract] [Full Text] [Related]
6. Development of simulatenous resistance in Ostertagia circumcincta to thiabendazole, morantel tartrate and levamisole. Le Jambre LF, Southcott WH, Dash KM. Int J Parasitol; 1978 Dec; 8(6):443-7. PubMed ID: 748216 [No Abstract] [Full Text] [Related]
9. Resistance of Haemonchus contortus to thiophanate. Edwards JR, De Chaneet G. Res Vet Sci; 1980 Nov; 29(3):370-2. PubMed ID: 7255897 [Abstract] [Full Text] [Related]
16. The activity of levamisole against benzimidazole resistant Haemonchus contortus and Trichostrongylus colubriformis. Coles GC, Briscoe MG, Simpkin KG. Vet Rec; 1979 Nov 17; 105(20):470. PubMed ID: 516343 [No Abstract] [Full Text] [Related]