Heldman, Robert K. <br/><br/>
Information telecommunications :  networks, products, & services / 
Robert K. Heldman 
 - New York :  McGraw-Hill,  c1994 
 - xiv, 393 p. :  ill. ;  24 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>0070280401 :  USD 36.95 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommunication--Social aspects<br/>Information networks--Social aspects<br/>Information science--Social aspects
<br/><br/><label>Dewey Class. No.: </label>384