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Credit
Illustrations of the centimetre-gramme-second (c.g.s.) system of units : based on the recommendations of the committee appointed by the British Association 'for the selection and nomenclature of dynamical and electrical units' / by J.D. Everett. 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.