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Between May 1985 and April 1986, the helminth fauna of cattle from Lajeado Grande district of Rio Grande do Sul, Brazil, was investigated. The species identified were Haemonchus contortus, Ostertagia ostertagi, O. circumcincta, Trichostrongylus axei, T. colubriformis, Cooperia punctata, C....

Silva-Santos, I. C.; Lima Correa, B.; Scaini, C. J.; Carniel, R. L.
Lavoura Arrozeira, 1994, 47, 415, pp 6-12, 14, 16-18