Lyndon, Roger C. <br/><br/>
Combinatorial group theory 

 - United States of America  Springer  2001 
 - xiv,339p.  PB  20cm. 
<br/><br/> includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9783540411581 
<br/><br/><label>Dewey Class. No.: </label>511.6  / LYN