Sadler, A.J. <br/><br/>
Understanding pure mathematics/ 
By A.J. Sadler and D.W.S. Thorning. 
 - Oxford:  Oxford University Press,  1987. 
 - 602 p.: 
<br/><br/><label>ISBN: </label>9780199142439 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics.
<br/><br/><label>LC Class. No.: </label>QA39.2  / SAD 1987