Effron, Joel,  1944- <br/><br/>
Data communications techniques and technologies / 
Joel Effron. 
 - Belmont, CA :  Lifetime Learning Publications,  c1984. 
 - xv, 265 p. :  ill. ;  25 cm. 
<br/><br/><label>ISBN: </label>0534032702 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Data transmission systems.
<br/><br/><label>Dewey Class. No.: </label>384