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Credit
Chemical addenda : being a brief exposition of the salient features of modern chemistry, compiled chiefly from the papers of Brodie, Dalton, Frankland, Gerhardt, Wolcott Gibbs, Hofmann, Kekulé, Odling, Williamson, Wurtz, etc. : designed as an appendix to elementary text-books on the science / by B.W. Gibsone. Public Domain Mark. Source: Wellcome Collection.
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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.