The code of health and longevity. Or, A general view of the rules and principles calculated for the preservation of health, and the attainment of long life / By Sir John Sinclair, Bart.

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The code of health and longevity. Or, A general view of the rules and principles calculated for the preservation of health, and the attainment of long life / By Sir John Sinclair, Bart. Public Domain Mark. Source: Wellcome Collection.