The Contractual Obligation Implementation
| Episode Number | 18 |
|---|---|
| Season | 6 |
| Aired | 2013-03-07 |
| Overview | Leonard, Sheldon and Wolowitz talk to junior high girls about science-related careers; Raj plans a date with Lucy. |
| Runtime | 25 minutes |
| Absolute Number | 129 |
| Finale Type |