GEOLOGICAL SURVEY OF INDIA
Plot No-dk-6, Sector-2, Bhu Bijan Bhavan, Salt Lake,, Kolkata - 700091, West Bengal, India
21, Charu Chandra Place East,, Kolkata - 700033, West Bengal, India
Plot No-dk-6, Sector-2, Bhu Bijan Bhavan, Salt Lake,, Kolkata - 700091, West Bengal, India
52-c/a/1, Babu Bagane Lane, Dhakuria,, Kolkata - 700031, West Bengal, India
Plot No :- 2, Deshapriya Nagar, 1, Kalicharan Ghosh Road, Opposite Of Bombay Dyeing Showroom, Sinthee More,, Kolkata - 700050, West Bengal, India
12b, Princep Street,, Kolkata - 700072, West Bengal, India