TY  - BOOK
AU  - Subramanian V
TI  - Text book in environmental science
SN  - 8173194106 (pbk)
U1  - G:55, P2;3 
PY  - 2002///
CY  - New Delhi
PB  - Narosa Publishing House    
KW  -  Environment
KW  -  Environmental science
KW  - Biology
N1  - Bibliographical references 225-229p.; Index 233-238p
ER  -