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Season 6 Episode 18
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Season 6 Episode 18
The Contractual Obligation Implementation
Mar 07, 2013 on CBS at 8:00 PM
Summary
Leonard, Sheldon and Wolowitz talk to junior high girls about science-related careers; Raj plans a date with Lucy.
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Guest stars
Brian Posehn, Dawson Fletcher, Diamond White, Kate Micucci, Piper Mackenzie Harris
