Ключевые слова: a reverse side of the book, aged, ancient, antique, backdrop, bibliography, binding, blank, book, books, books on the shelf, bookshelf, collection, concept, cover, design, dictionary, document, education, group, information, knowledge, learn, library, literary, literature, novel, old, old books, paper, pattern, pile, read, reading, school, shelf, stack, study, teaching, textbook, texture, the leader, the turned books,