| Level | Item |
| Ref No | L/E/6/80 |
| Alt Ref No | E(L)/6/80 |
| Title | Choreology (Effort) \ Effort readiness for inner or external actions |
| Date | n.d. |
| Extent | 2 sheets |
| Description | Handwritten notes and drawings by Rudolf Laban on the effort cube. |
| Language | English |
| Physical Description | Original reference number was 20/VI/1. |
| Format | Papers |