Frequency requirements for the wireless stations proposed to be established by the Police.  
 File No. EBP5W-5/47 

 -  1947 
 - 17 p.  H-35 cm; W-22 cm. 
<br/><br/> সচিবালয় রেকর্ডরুম সংগ্রহ (প্রথম পর্যায়) <br/><br/> 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Frequency --requirement