Specification of Joseph Judge Hays : purifying and utilizing sewage.
- Hays, Joseph Judge.
- Date:
- 1871
Licence: Public Domain Mark
Credit: Specification of Joseph Judge Hays : purifying and utilizing sewage. Source: Wellcome Collection.
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Licence: Public Domain Mark
Credit: Specification of Joseph Judge Hays : purifying and utilizing sewage. Source: Wellcome Collection.