Ключевые слова: abstract, aged, antique, archive, background, bible, blue, book, business, close, cognition, concept, copy, cover, cyclopaedia, dark, dictionary, document, education, flip, grunge, information, knowledge, law, learn, library, literature, novel, old, open, page, paper, publishing, read, research, retro, school, science, sheet, space, spiritual, story, study, symbol, teaching, text, textbook, university, up, vintage,