Ключевые слова: background, book, books, bookshelf, bookstore, close, collection, college, cover, culture, document, education, group, hardcover, heap, history, homework, information, isolated, knowledge, large, learn, learning, leisure, library, literacy, literary, literature, novel, old, page, paper, pile, read, reading, research, school, science, stack, study, studying, textbook, two, university, up, used, vintage, white, wisdom, writing,