Boas Ralph P. <br/><br/>
A Primer of Real Functions / 
Boas Ralph P. 
 - New Jersey :  J.Wiley,  1961. 
 - XIII,189s. ;  20cm. 
<br/><br/> The Carus Mathematical Monographs, Publ. by the Mathematical Association of America.Nr 13. 
<br/><br/><label>Universal Decimal Class. No.: </label>517.51