Ключевые слова: aged, ancient, antique, book, books, classic, classics, closed, concept, copy space, cover, culture, education, educational, encyclopedia, group, hardcover, heap, history, isolated, knowledge, learn, learning, leather, library, literary, literature, novel, old, page, paper, past, pile, read, reading, research, row, school, science, stack, stacked, study, table, teaching, textbook, university, vintage, white, wisdom, writing,