Natural hygiene, or, healthy blood : the essential condition of good health and how to attain it a treatise for physicians and their patients on the predisposition to and prevention of disease / by H. Lahmann.

Licence: Public Domain Mark

Credit: Natural hygiene, or, healthy blood : the essential condition of good health and how to attain it a treatise for physicians and their patients on the predisposition to and prevention of disease / by H. Lahmann. Source: Wellcome Collection.