Johns, P. B. <br/><br/>
Communication systems analysis / 
P.B. Johns and T.R. Rowbotham. 
 - London :  Butterworths,  1972. 
 - 207 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Signal theory (Telecommunication)<br/>Modulation theory.<br/>Radio noise.