Geometric group theory : 

 - Cambridge ; | New York, NY, USA :  Cambridge University Press,  1993 
 - 2 v. :  ill. ;  23 cm. 
 - London Mathematical Society lecture note series ;  181-182 .
<br/><br/> Papers presented at Geometric Group Theory Symposium in Sussex, in 1991. 
<br/><br/><label>ISBN: </label>0521446805 (set)