U.S. federal trademark · Serial No. 86188598 · Reg. No. 4601146
Audio books in the field of knowledge in history, culture, sociology, anthropology, art, music, law, history, finance, math, science, engineering, computer science, business and education; Downloadable video recordings featuring knowledge in history, culture, sociology, anthropology, art, music, law, history, finance, math, science, engineering, computer science, business and education; DVDs featuring knowledge in history, culture, sociology, anthropology, art, music, law, history, finance, math, science, engineering, computer science, business and education; E-books featuring knowledge in history, culture, sociology, anthropology, art, music, law, history, finance, math, science, engineering, computer science, business and education recorded on computer media
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