Clark, A. P. <br/><br/>
Advanced data :  transmission systems / 
A. P. Clark 
 - London :  Pentech Press,  1977 
 - 427 p. :  ill. ;  23 cm. 
<br/><br/><label>ISBN: </label>0727301012 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Data transmission systems<br/>Signal theory (Telecommunication)