Williams, Brian K. <br/><br/>
Using information technology :   a practical introduction to computers & communications / 
Brian K. Williams, Stacey C. Sawyer, Sarah E. Hutchinson 
 - 3rd ed 
 - Boston, MA:   Irwin/McGraw-Hill,   1999 
 - xxx, 610 p.:   ill. (some col.), col. maps; 28 cm. 
<br/><br/>Includes bibliographical references (p. 595-601) and index 
<br/><br/><label>ISBN: </label>0256261466 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computers<br/>Telecommunication systems<br/>Information technology