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Hoblet, K. H., Schnitkey, G. D., Arbaugh, D., Hogan, J. S., Smith, K. L., Schoenberger, P. S., … Conrad, H. R. (1991). Costs associated with selected preventive practices and with episodes of clinical mastitis in nine herds with low somatic cell counts. Journal Of The American Veterinary Medical Association, 199(2), 190-196.