TY  - SER
AU  - Khalil R.Chowdhury
TI  - Bangladesh Geosciences Journal: - 
SN  - 1028-6845
U1  - 550.9095492 BAN 
PY  - 1999///
CY  - Dhaka Bangladesh
PB  - Geological Sciences Jahangir Nagar University
ER  -