Sze-Tsen Hu,  . <br/><br/>
Elements of General Topology /  

 - 1st ed /  
 - San Francisco :   Holden-Day, Inc.. 
 - p.214,x :  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Topology
<br/><br/><label>Dewey Class. No.: </label>B316  / K4