One air bucket guard and india-rubber valve. 20 July 1857
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- Bookmark:http://archiveshub.jisc.ac.uk/data/gb216-d/dnai/d/dnai/s/15/22
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- ReferenceGB 216 D/D NAI/S/15/22
- Dates of Creation20 July 1857
- Language of MaterialEnglish
- Physical Description1 plan