Silver, Gerald A. <br/><br/>
Data communications for business / 
Gerald A. Silver, Myrna L. Silver. 
 - 2nd ed. 
 - Boston, Mass. :  Boyd & Fraser,  c1991. 
 - xii, 468 p. :  ill. (some col.) ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0878354379 (cased) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Business--Data processing.<br/>Business--Communication systems.<br/>Data transmission systems.<br/>Computer networks--Planning.<br/>Office practice--Automation.