Ключевые слова: background, black, blank, book, books, bookshelf, bookstore, concept, desk, device, digital, display, e, ebook, ebooks, education, elearning, electronic, ereader, holding, information, internet, isolated, knowledge, library, literature, man, media, mobility, modern, object, pad, pages, read, reader, school, screen, stack, study, studying, symbol, table, tablet, technology, text, touch, touchscreen, white, wireless,