TY  - BOOK
AU  - Subramanian,V.
TI  - A textbook in environmental science / 
SN  - 8173194106
U1  - 363.7 
PY  - 2002///
CY  - New Delhi : 
PB  - Narosa Publishing House , 
KW  - ENVIRONMENTAL SCIENCE
N1  - Includes bibliogaphy and index
ER  -