Specification of Robert Angus Smith and Alexander McDougall : deodorizing and disinfecting sewage matters, and separating manure therefrom.

  • Smith, Robert Angus.
Date:
1854

Licence: Public Domain Mark

Credit: Specification of Robert Angus Smith and Alexander McDougall : deodorizing and disinfecting sewage matters, and separating manure therefrom. Source: Wellcome Collection.

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