Froehlich, John Paul. <br/><br/>
Information transmittal and communications systems 

 - New York :   Holt, Rinehart and Winston, Inc,   1969. 
 - 274 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>TRANSMISION DE LA INFORMACION<br/>SISTEMAS DE COMUNICACION
<br/><br/><label>Universal Decimal Class. No.: </label>621.391