Ключевые слова: background, blank, book, brown, cover, data, desk, document, education, expertise, glasses, hardbook, history, information, knowledge, learn, learning, library, literature, mess, notebook, object, old, page, paper, pencil, reading, research, retro, stack, stained, study, studying, table, textbook, training, untidiness, vintage, wall, wisdom, wood, wooden, writing,