Hofstadter, Douglas R. <br/><br/>
Godel, Escher, Bach :  an eternal golden braid / 
Douglas R. Hofstadter. 
 - 20th anniversary ed. 
 - New York :  Basic Books,  1999. 
 - xxi, 777 p. :  ill. ;  23 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9780465026562 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Metamathematics.<br/>Symmetry.<br/>Artificial intelligence.
<br/><br/><label>Dewey Class. No.: </label>510.1  / HOF