Clapham .C <br/><br/>
The oxford concise dictionary of mathematics 
Christopher. C 
 - 5th 
 - Oxford  Oxford university press  2014 
 - iv, 537p, ;ill  pbk 
<br/><br/><label>ISBN: </label>9780199679591 
<br/><br/><label>LC Class. No.: </label>REF QA5.09 2014