Knowledge is power,various books in a bookshell with drawing of a lightbulb,education,learning,reading,idea,knowledge

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Keywords: book, books, bookshelf, close, college, copy, desk, education, expertise, fair, free, hardcover, heap, home, idea, information, interior, knowledge, large, law, learning, library, lightbulb, literature, media, medium, mock, office, pages, paper, pile, power, printed, read, reading, research, row, school, science, shelf, space, study, studying, symbol, template, textbook, university, volume, wisdom, words, work, working, writing