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McDonald TJ, McDonald JS. Streptococci isolated from bovine intramammary infections. Am. J. Vet. Res. 37: 377-381, 1976. PubMed: 817626
McDonald JS, McDonald TJ. Differentiation of streptococci recovered from bovine intramammary infections. Proc. Am. Assoc. Vet. Lab. Diagnosticians 18: 251-256, 1975.
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