Ash, Robert B, <br/><br/>
Real variables with basic metric space topology 

 - New York:  Dover Publication,  2007. 
 - x;213p:  24 cm. 
<br/><br/> Dover ed. 
<br/><br/><label>ISBN: </label>9780486472201 
<br/><br/><label>Dewey Class. No.: </label>515.8 ASH