Systematic survey of the regime of communications of importance to the working of the League of natioons at times of emergency 

 -  1934 
 - L O N 1934; 6 .
<br/><br/><label>Standard No.: </label>90,889 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>HISTORY
<br/><br/><label>Dewey Class. No.: </label>V1N19:X:80X4, G4