Courant, Richard. <br/><br/>
What is mathematics?   an elementary approach to ideas and methods / 
Richard Courant and Herbert Robbins. 
 - London :  Oxford University Press,  1961. 
 - 521 p. ;  22 cm. 
<br/><br/> Includes index. 
<br/><br/>Bibliography : p.511-514. 
<br/><br/>392  392 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics.
<br/><br/><label>Dewey Class. No.: </label>510 / C833w