Clark, A. P. <br/><br/>
Principles of digital data transmission 
A. P. Clark 
 - 2nd ed 
 - London  Pentech Press  1983 
 - 300 p.  ill.  22 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Digital electronics<br/>Telecommunication--Equipment and supplies