Two-dimensional homotopy and combinatorial group theory 
edited by Cynthia Hog-Angeloni and Wolfgang Metzler and Allan J Sieradski 
 - Cambridge  Cambridge University Press  1993 
 - xi,412p.;22cm. 
 - London Mathematical Society Lecture Notes Series; no.197 .
<br/><br/><label>ISBN: </label>0521447003 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Homotopy Theory<br/><Homotopy Theory<br/>Combinatorial Group Theory
<br/><br/><label>Dewey Class. No.: </label>514.2  / HOG-ANG