Williams, Brian K., <br/><br/>
Using information technology: a practical introduction to computers & communications 
Brian K. Williams, Stacey C. Sawyer. 
 - 5th ed. 
 - New York, NY :  McGraw-Hill,  c2003. 
 - xxix, 482 p. :  ill. (some col.), col. maps ;  28 cm. 
<br/><br/><label>ISBN: </label>0072485558 0071151052 0072485558 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computers.<br/>Telecommunication systems.<br/>Information technology.