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An epidemiological study of gastro-intestinal helminths of naturally infected crossbred Zebu calves was carried out in Campo Maior, Piauí, Brazil, from August 1977 to August 1979. Monthly data of faecal egg counts (EPG), stool culture and necropses were obtained from 25 calves aged 9-12 months and...

Girão, E. S.; Girão, R. N.; Medeiros, L. P.
Pesquisa Agropecuária Brasileira, 1985, 20, 8, pp 889-897