Thou Shalt Teach Them Diligently {repeat of 50/12/03}

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The National Broadcasting Company (NBC) is an American commercial broadcast television and radio network, serving as the flagship property of NBC Entertainment, a division of NBCUniversal, which is a subsidiary of Comcast. It is one of NBCUniversal's two flagship subsidiaries, alongside Universal Studios. It is the first and oldest major broadcast network in the United States.

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“Thou Shalt Teach Them Diligently {repeat of 50/12/03}.” NBC. Radio broadcast, February 11, 1973.