Scowlen F <br/><br/>
Introduction to the theory and design of electric wave filters 

 -  1945 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>33367 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>D65:4,FI, H5;J0