Yes. Those are the things that were memorized and recited word for word by by poets and bards, have been printed on reed papyrus for several hundred years, then scrolls, then hand written on sheets by monks in monasteries up until the middle ages or so, printed mechanically with the invention of the printing press and sold to the literate rich, then collected in libraries where the public could read them but not check them out at first, sold mass market within the last 100 years or so, electronically stored and played back on tape, records and disks, digitally recorded and stored as ascii, .doc, pdf, audio and epub where they could be read on a variety of devices. Eventually, well, who knows? Stored and read holographically? Downloaded and embedded biologically? In short, a book isn't just the physical medium of bound paper pages. That's just one very small but important way the data was stored and the information transmitted to your brain through your eyes (if you're sighted), or your ears or fingers (if you're not).