Schwartz, Martin <br/><br/>
Amateur radio theory course 
/ by Martin Schwartz, ... 
. - New York  : AMECO, 1974
. - 320 p.  ; 23 cm. 
<br/><br/>Index 
<br/><br/><label>Source: </label> Don de la coopération canadienne 
<br/><br/><label>Universal Decimal Class. No.: </label>621.396.74