COURANT , Richard  <br/><br/>
What is Mathematics? : An Elementary Approach to Ideas and Methods  : 

 - Oxford , New York and Toronto :  Oxford University Press ,  1941 . 
 - 521 p . :  ill . ; 23 cm .  
<br/><br/> includes index  
<br/><br/><label>ISBN: </label>0195025172 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics .
<br/><br/><label>Dewey Class. No.: </label>510