Thomson, John <br/><br/>
Radio communication at ultra high frequency / 
John Thomson 
 - London :  Methuen,  c1950 
 - xix, 203 p. :  ill. ;  23 cm. 
<br/><br/>Includes bibliographies. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Shortwave radio.
<br/><br/><label>Dewey Class. No.: </label>621.384151  / THR 1950