Williams' analytical approximations of the leading patent medicines : the following gives the constituents of the best known nostrums or secret remedies advertised to the public. They are in every case the result of analyses, and make no pretensions beyond being honest and careful analytical approximations / [R.J. Williams].

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Williams' analytical approximations of the leading patent medicines : the following gives the constituents of the best known nostrums or secret remedies advertised to the public. They are in every case the result of analyses, and make no pretensions beyond being honest and careful analytical approximations / [R.J. Williams]. Public Domain Mark. Source: Wellcome Collection.