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Credit
Therapeutic means for the relief of pain : being the prize essay for which the Medical Society of London awarded the Fothergillian Gold Medal in 1874 / by John Kent Spender. Public Domain Mark. Source: Wellcome Collection.
Provider
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.