20b, Duff Street, Burrabazar, , Kolkata - 700007, West Bengal, India
64B, Surya Sen Street, , Kolkata - 700009, West Bengal, India
C/O Rotary Narayana Nethralaya, , Kolkata - 700091, West Bengal, India
A J 258, Salt Lake City, , Kolkata - 700091, West Bengal, India
19a/38, Seal Lane, , Kolkata - 700015, West Bengal, India