Hofstadter, Douglas R., <br/><br/>
Gödel, Escher, Bach :  an eternal golden braid / 
Douglas R. Hofstadter. 
 - 20th anniversary edition 
 - New York :  Basic Books,  c1999. 
 - 23, vi-xxi, 777 p. : 
<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  / HOG