Specification of William Parry and John Frearson : treating sewage.
- Parry, William, 1817-1888.
- Date:
- 1867
Licence: Public Domain Mark
Credit: Specification of William Parry and John Frearson : treating sewage. Source: Wellcome Collection.
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Licence: Public Domain Mark
Credit: Specification of William Parry and John Frearson : treating sewage. Source: Wellcome Collection.