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“The Contractual Obligation Implementation", Episode 18 of Season 6

Leonard (Johnny Galecki), Sheldon (Jim Parsons) and Wolowitz (Simon Helberg) speak to junior high girls about careers in science, on THE BIG BANG THEORY, airing Thursday, March 7th on the CBS Television Network. Photo: Michael Yarish/Warner Bros. ©2013 Warner Bros. Television. All Rights Reserved.