TY  - BOOK
AU  - Subramanian,V, x
AU  - x
TI  - A text book in environmental science: x
SN  - 8173194106
U1  - 574.52/S941t 
PY  - 2002///
CY  - Mumbai
PB  - Narosa
KW  - Environmental Sciences
N1  - Includes
ER  -