Instruction regarding the use of their paper envelopes in correspondence intended for dispatch by air mail.  
 File No.  2R-41/39 

 -  1939 
 - 2 P.  H-35 cm; W-22 cm 
<br/><br/> সচিবালয় রেকর্ডরুম সংগ্রহ (প্রথম পর্যায়) <br/><br/> 
<br/><br/><label>Subjects--Topical Terms: </label><br/>paper