https://www.hachettebookgroup.com/titles/douglas-r-hofstadter/metamagical-themas/9780465045662/
Apr 5, 1996 - Hachette Book Group is a leading book publisher based in New York and a division of Hachette Livre, the third-largest publisher in the world.
douglas r hofstadterhachette book groupmetamagical themas