TY  - BOOK
AU  - Subrota Kumar Saha
AU  - ,
TI  - Poribesh Bijnan
SN  - 9840745859
U1  - 333 . 7  SAP 
PY  - 2007///
CY  - Bangladesh
PB  - Bangla Academy
KW  - Environmental Science
N1  - ISD
ER  -