Silver, Gerald A. <br/><br/>
Data communications for business / 
Gerald A. Silver and Myrna L. Silver 
 - 2nd edition. 
 - Boston :  Boyd & Fraser Publishing Company,  1991. 
 - xii, 468 pages :  illustrations ;  23 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>053498231X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Business--Data processing<br/>Business--Communication systems<br/>Data transmission systems<br/>Computer network--Planning<br/>Office practice--Automation