Sinnema, William,  1937- <br/><br/>
Digital, analog, and data communication / 
William Sinnema 
 - Reston, Va. :  Reston Pub. Co.,  1982 
 - xiii, 433 p. :  ill. ;  25 cm. 
<br/><br/>Includes index 
<br/><br/><label>ISBN: </label>0835913015 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Data transmission systems<br/>Digital communications