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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