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Credit
Observations on the current coinage of Great Britain, as the medium of barter, calculation, and accounts : and on Professor De Morgan's plan for its more convenient and scientific arrangement, on the decimal system, with the advantages that would result from it, exemplified / by Henry Taylor. Public Domain Mark. Source: Wellcome Collection.
Provider
This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.