Ключевые слова: archive, background, backup, bible, book, books, carriers, computer, concept, cover, culture, datum, different, digital, disc, document, drive, education, electronic, eras, file, flash, hardcover, heap, idea, information, isolated, keepers, learn, learning, library, literature, memory, old, paper, pile, portable, progress, reading, science, stack, storage, store, study, symbol, technology, textbook, usb, volume, white,