Helszajn J <br/><br/>
Nonreciprocal microwave junctions and circulators. 
Helszajn J 
 -  1975 
<br/><br/><label>Standard No.: </label>18808 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>D65264, L5