TY  - GEN
ED  - Government of East Bengal & East Pakistan 
TI  - High Grade Privacy Service on Trunk Calls between East and West Pakistan. 
PY  - 1952///
KW  - Privacy
KW  -  Service
N1  - সচিবালয় রেকর্ডরুম সংগ্রহ (প্রথম পর্যায়) 


ER  -