books.google.it - Thirteen points of entry. Locked gateways to magical realms of immense power--and danger, for the uninitiated. Within these pages are thirteen keys. Enter the Necronomicon and be forever changed. In this authentic sourcebook for magicians, occult scholar Donald Tyson uses H. P. Lovecraft's story elements...http://books.google.it/books/about/The_13_Gates_of_the_Necronomicon.html?hl=it&id=Q-gJK_zagEcC&utm_source=gb-gplus-shareThe 13 Gates of the Necronomicon
