Davis, Sheldon W <br/><br/>
Topology / 
by Sheldon W. Davis 
 - New Delhi:   Tata McGraw Hill,  2006 
 - p.293 
<br/><br/><label>ISBN: </label>0070616108 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics<br/>Topology
<br/><br/><label>Dewey Class. No.: </label>514  / DAV-T