Diphtheria : its nature, history, causes, prevention, and treatment on hygienic principles; with a resumé of the various theories and practices of the medical profession / By R.T. Trall.

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Diphtheria : its nature, history, causes, prevention, and treatment on hygienic principles; with a resumé of the various theories and practices of the medical profession / By R.T. Trall. Public Domain Mark. Source: Wellcome Collection.

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This material has been provided by the Gerstein Science Information Centre at the University of Toronto, through the Medical Heritage Library. The original may be consulted at the Gerstein Science Information Centre, University of Toronto.