Williams, Brian K.,  1938- <br/><br/>
Using information technology :  a practical introduction to computers & communications / 
Brian K. Williams, Stacey C. Sawyer. 
 - 7th ed. 
 - Boston, Mass. :  McGraw-Hill/Irwin,  2007. 
 - xxiv, 554, 12 p. :  ill. (chiefly col.), col. maps ;  28 cm. 
<br/><br/>Includes bibliographical references (p. 541-552) and index. 
<br/><br/><label>ISBN: </label>0072260718 (pbk.)  RM222.49 9780072260717(pbk.) 9780071107686 (pbk. : intl. edition) 0071107681 (pbk. : intl. edition) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computers.<br/>Telecommunication systems.<br/>Information technology.