Hoag, Barton J. <br/><br/>
Basic radio :   The essentials of electron tubes and their circuits 

 - New York :   Van Nostrand,   1942. 
 - 379 p. : il. ; 22 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>VALVULAS ELECTRICAS<br/>OSCILADORES<br/>AMPLIFICADORES DE RADIOFRECUENCIA
<br/><br/><label>Universal Decimal Class. No.: </label>XIII-23