| Level | Item |
| Ref No | L/E/64/62 |
| Alt Ref No | E(L)/64/62 |
| Title | Industrial Rhythm \ Effort and Work Capacity |
| Date | n.d. |
| Extent | 5 sheets |
| Description | Handwritten notes and diagrams. |
| Language | English |
| Physical Description | Original reference number was IR/I/1a. |
| Format | Papers |