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Credit
The effect of anaesthetics upon the human system, as evidenced by spectroscopic observations : read at a meeting of the American Dental Convention, the Southern Dental Association, and the Dental Society of the State of Maryland and District of Columbia, in joint session at Oakland, Maryland, August 16, 1877 / by S. Waterman. Public Domain Mark. Source: Wellcome Collection.
Provider
This material has been provided by the National Library of Medicine (U.S.), through the Medical Heritage Library. The original may be consulted at the National Library of Medicine (U.S.)