Ключевые слова: author, book, bookstore, cape, collection, cover, covering, document, educate, education, encyclopedia, encyclopedic, guide, hardcover, history, info, information, informed, instruct, instruction, intellectual, know, knowledge, leaf, learning, library, memorize, office, paper, penman, read, school, sequence, series, set, sheet, story, study, teach, teaching, tutorial, word, words, writer, writing,