TY  - GEN
ED  - Government of Bengal,
TI  - Permission to Dr. Sen, Director, Bengal P.H. Laboratory and to Rao Bahadur Govinda Raju, Superintendent, Bengal Vaccine laboratory. 
PY  - 1940///
KW  - Vaccine
KW  - laboratory
N1  - সচিবালয় রেকর্ডরুম সংগ্রহ (প্রথম পর্যায়) 


ER  -