The Missing 20th Century: How Copyright Protection Makes Books Vanish By Rebecca J. Rosen Mar 30 2012, 12:51 PM ET /Because of the strange distortions of copyright protection, there are twice as many newly published books available on Amazon from 1850 as there are from 1950./ [...] Continua qui: http://www.theatlantic.com/technology/archive/2012/03/the-missing-20th-centu... Video del prof. Paul Heald su cui si basa l'articolo: http://youtu.be/-DpfZcftI00