Modulation / 
prepared by the [Telecommunication Systems] Course Team. 
 - Milton Keynes :  Open University Press,  1976. 
 - 87 p. :  ill. 
 - Technology : Telecommunication systems ;  unit 2 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Modulation (Electronics).<br/>Telecommunication systems.