Estimate for blacking out essential rooms only to be used after dark during an emergency period.  
 File No.   1O-35/42 

 -  1942 
 - 40 p;   H-35 cm; W-22 cm 
<br/><br/> সচিবালয় রেকর্ডরুম সংগ্রহ (প্রথম পর্যায়) <br/><br/> 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Estimate --blacking