TY  - GEN
ED  - Government of East Bengal,
TI  - Introduction of a private Branch Exchange for all telephones in writers Buildings. 
PY  - 1941///
KW  -  writers
KW  - Buildings
N1  - সচিবালয় রেকর্ডরুম সংগ্রহ (প্রথম পর্যায়) 


ER  -