Gaal, Steven A, <br/><br/>
Point set topology 

 - New York:  Dover Publication,  2009. 
 - xi, 317 p.:  ill.;  22 cm. 
 - Dover books on mathematics. .
<br/><br/> Dover ed 
<br/><br/><label>ISBN: </label>9780486472225 
<br/><br/><label>Dewey Class. No.: </label>514 GAA