Penner, R. C.  1956- <br/><br/>
Combinatorics of train tracks/ 
by R.C. Penner with J.L. Harer. 
 - Princeton, N.J.:  Princeton University Press,  1992. 
 - xi, 216 p.:  ill.;  25 cm. 
 - Annals of mathematics studies;  no. 125 .
<br/><br/>Includes bibliographical references (p. 214-216). 
<br/><br/><label>ISBN: </label>0691087644 (alk. paper): 0691025312 (pbk. : alk. paper): 
<br/><br/><label>LCCN: </label>91033559 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geodesics (Mathematics)<br/>CW complexes.<br/>Combinatorial analysis.<br/>Géodésiques (Mathématiques).<br/>CW - Complexes.<br/>Analyse combinatoire.
<br/><br/><label>Dewey Class. No.: </label>511.6  / P413c