Code national français :   a mots de  5 lettres indicatif "NATIO" 

 - 674 pages  28 x 23 cm. 
<br/><br/>Bibliography: pages 200-250. 240-220  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cipher and telegraph codes.
<br/><br/><label>Subjects--Geographic Terms: </label>
<br/><br/><label>Dewey Class. No.: </label>341.04402  / C O