| Level | Item |
| Ref No | L/E/7/41 |
| Alt Ref No | E(L)/7/41 |
| Title | Choreology (Effort) \ Formative reckoning |
| Date | n.d. |
| Extent | 3 sheets |
| Description | Handwritten manuscript by Rudolf Laban on a way to calculate the efficiency curves of movements or efforts. |
| Language | English |
| Physical Description | Original reference number was 38/I/6a. Pages numbered 1-3. |
| Format | Papers |