The Royal Signals. <br/><br/>
Handbook Of Line Communication.Vol-1. 

 - 1st Ed. 
 -  Mc Millan and Company  1973 
 - 210p.  20 cm. 
<br/><br/><br/>Text in English 
<br/><br/><label>Index Terms--Genre/Form: </label><br/>F-01
<br/><br/><label>Dewey Class. No.: </label> / THE