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Richardson, A. J., R. A. Frankenberg, A. C. Buck, J. B. Selkon, J. S. Colbourne, J. W. Parsons, و R. T. Mayon-White. An Outbreak of Waterborne Cryptosporidiosis in Swindon and Oxfordshire. Cambridge University Press, 1991.

Richardson, A. J., et al. An Outbreak of Waterborne Cryptosporidiosis in Swindon and Oxfordshire. Cambridge University Press, 1991.