Lyndon,Roger C. <br/><br/>
Combinatorial group theory/ 
Roger C. Lyndon,Paul E. Schupp 
 - New York :  Springer,  2001. 
 - xvi,339p. :  25cm. 
 - Classics in mathematics. .
<br/><br/>Includes index. 
<br/><br/>Chapter I. Free Groups and Their Subgroups  <br/>Chapter II. Generators and Relations <br/>Chapter III. Geometric Methods <br/>Chapter IV. Free Products and HNN Extensions  <br/>Chapter V. Small Cancellation Theory  
<br/><br/><label>ISBN: </label>9783540411581 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Combinatorial group theory.
<br/><br/><label>Dewey Class. No.: </label>512.2  / LYN/C