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2. Influence of improved ventilation on health of confined cattle;Anderson;J. Am. Vet. Med. Assoc.,1979
3. Some factors influencing respiratory disease in growing bulls and the effect of treatment on liveweight;Andrews,1978
4. Calf rearing;Baber,1981
5. Intensive housing and its effect on farm animals;Baxter;S. Afr. J. Anim. Sci.,1974