| Level | Item |
| Ref No | L/E/65/60 |
| Alt Ref No | E(L)/65/60 |
| Title | Industrial Rhythm \ Effort Training \ Evolution of Effort in Animals and Men |
| Date | 19 December 1944 |
| Extent | 10 sheets |
| Description | Typed manuscript with handwritten amendments and diagrams that is Chapter II of the Second Part of a larger work entitled Effort Training. Relates to 'Black Book', pp 131-142. |
| Language | English |
| Physical Description | Original reference number was IR/VII/2d. Pages numbered 1-10. |
| Format | Papers |