Courant, Richard <br/><br/>
What is Mathematics:  an elementary approach to ideas and methods/ 
Richard Courant and Herbert Robbins 
 - Oxford  Oxford University Press  1941 
 - 514p.:  ill.  22cm 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>0195025172 
<br/><br/><label>LC Class. No.: </label>QA37.2  / .C83 1941