Bradley, Ray. <br/><br/>
Understanding computer science for advanced level / 
by Ray Bradley. 
 - 4th ed. 
 - United Kingdom :  Nelson Thornes,  2001. 
 - vi, 730 p. :  ill ;  27 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0748740465 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer science.