[ 发表于: Journal of Veterinary Research ]
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Gastro-intestinal parasites of cattle in the communal grazing system of Botshabelo in the Free State [South Africa]
1999
Dreyer, K. | Fourie, L.J. | Kok, D.J. (Orange Free State Univ., Bloemfontein (South Africa). Dept. of Zoology and Entomology)
National Department of Agriculture, Agricultural Information Centre - South Africa
The absence of clinical disease in cattle in communal grazing areas where farmers are changing from an intensive dipping programme to one of endemic stability to tick-borne diseases
1998
Tice, G.A. (Southern African Medical Univ., Medunsa (South Africa). Dept. of Production Animal Medicine) | Bryson, N.R. | Stewart, C.G. | Du Plessis, B. | De Waal, D.T.
National Department of Agriculture, Agricultural Information Centre - South Africa
