Biographie de John Michael Greer
John Michael Greer has published 10 books about occult traditions and the unexplained. Recent books include 'Monsters: An Investigator's Guide to Magical Beings' (Llewellyn, 2001), which was picked up by One Spirit Book Club and has appeared in Spanish and Hungarian editions, and 'The New Encyclopedia of the Occult' (Llewellyn, 2003).