Ключевые слова: background, book, books, collection, color, colorful, cover, education, expertise, group, hardcover, heap, history, information, isolated, knowledge, learning, library, literature, many, object, old, pack, page, paper, pile, reading, red, retro, school, science, set, stack, stacked, study, text, textbook, university, vintage, white, wisdom, writing, zzzahlaaaifpenehfpdfdidfde,