Alexandrov, P. S.  <br/><br/>
Combinatorial Topology 
/ by P. S. Alexandrov 
 - new york  Dover Publications  1998 
 - 148p. 
<br/><br/><label>ISBN: </label>0486401790 
<br/><br/><label>Dewey Class. No.: </label>514.22  / ALE/C