Codding George Arthur Au. <br/><br/>
International telecommunication union 

 - New York  Arno press U.S.A.       1952 
 - xvi,505p  cm. 
<br/><br/><label>Standard No.: </label>10,335 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>D65:4:Z1, J2