TY  - GEN
AU  - Datta, Nilanjana
AU  - Datta, P.K.
TI  - The environment and its problems
SN  - 81-87169-15-X
U1  - 363.7 
PY  - 2005///
CY  - Kolkata
PB  - Sarat Book
KW  - ENVIRONMENTAL SCIENCES
ER  -