Hardgrave Grindability Index Interim Report (2136) Feb 1964
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- Bookmark:http://archiveshub.jisc.ac.uk/data/gb216-d/dpro/ncb6/d/dpro/ncb/6/161
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- ReferenceGB 216 D/D PRO/NCB/6/161
- Dates of CreationFeb 1964
- Language of MaterialEnglish
- Physical Description1 file