Ключевые слова: 22, ancient, antique, background, book, bookshelf, brown, classic, closeup, cognition, collection, college, cover, education, educational, expertise, group, grunge, heap, history, information, learn, learning, library, literary, literature, many, new year, newyear, old, open, page, paper, pile, read, reading, research, retro, row, school, science, stacked, study, textbook, university, vintage, wisdom, writing, year, yellow,