| RefNo | AP/22/4 |
| Previous numbers | AP.22.4 |
| Level | Item |
| Title | Unpublished paper, 'Three different tables of a new and compendious invention' by J H Backs |
| Date | 14 June 1839 |
| Description | Backs shares tables of mathematical calculations regarding fractions.
Subject: Mathematics
Written by Backs in Hamburg. |
| Extent | 4p |
| Format | Manuscript |
| PhysicalDescription | Ink on paper |
| Digital images | View item on Science in the Making |
| AccessStatus | Open |