The coal-tar colors : with especial reference to their injurious qualities and the restriction of their use : a sanitary and medico-legal investigation / by Theodore Weyl ; with a preface by Professor Sell ; translated with permission of the author by Henry Leffman.

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The coal-tar colors : with especial reference to their injurious qualities and the restriction of their use : a sanitary and medico-legal investigation / by Theodore Weyl ; with a preface by Professor Sell ; translated with permission of the author by Henry Leffman. Public Domain Mark. Source: Wellcome Collection.

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This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.