Froehlich Fritz E Ed. <br/><br/>
Encyclopedia of telecommunications.V1. 
Froehlich Fritz E Ed.; Kent Allen Ed. 
 - New York     Marcel Dekker       1991 
<br/><br/><label>Standard No.: </label>38138 
<br/><br/><label>Source: </label> Reference Collections 
<br/><br/><label>Dewey Class. No.: </label>D65,4k1,N91, N1.1       RR