Courant, Richard <br/><br/>
What is mathematics ?  : an elemantary approach to ideas and methods 
/ Richard Courant and Herbert Robbins 
. - 2nd ed. 
. - New York  : Oxford University, 1996
. - 566 p.  : ill.  ; 23 cm. 
<br/><br/>Index 
<br/><br/><label>Source: </label> Don 
<br/><br/><label>Universal Decimal Class. No.: </label>510.