Principles underlying radio communication 

 - 2nd ed. 
 - Washington :  Government Printing Office,  1922. 
 - 619 p. :  ill. ;  19 cm. 
 - Radio Communication Pamphlet  40 .
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>9781527718517 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Radio Communication<br/>Wireless Transmission<br/>Signal Propagation<br/>Radio Frequency (RF) Engineering<br/>Wave Propagation
<br/><br/><label>Dewey Class. No.: </label>621.3841  / PRI