Janes C4 I SYstems 
Edited by peter Rackham 
 - London  publication Data 
 - 382 
<br/><br/><label>ISBN: </label>0710613687 
<br/><br/><label>Subjects--Topical Terms: </label><br/>communication System
<br/><br/><label>Dewey Class. No.: </label>358.24