Croom  <br/><br/>
Principles of topology  
/ Fred H. Croom. 
 - Philadelphia  Saunders College Pub.  1989. 
 - xi, 312p.  ill.  24cm 
<br/><br/> Includes index p.305-312 
<br/><br/><label>ISBN: </label>9812432884  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Topology
<br/><br/><label>Dewey Class. No.: </label>514 CRO 1989