The sphygmograph : its history and use as an aid to diagnosis in ordinary practice / by R.E. Dudgeon.

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The sphygmograph : its history and use as an aid to diagnosis in ordinary practice / by R.E. Dudgeon. Public Domain Mark. Source: Wellcome Collection.

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This material has been provided by the Francis A. Countway Library of Medicine, through the Medical Heritage Library. The original may be consulted at the Francis A. Countway Library of Medicine, Harvard Medical School.