TY  - BOOK
AU  - Trivedi,R.N.
TI  - A text book of environmental sciences
SN  - 8174885447
AV  - GE105 .M39 1998
U1  - 363.7 21
PY  - 1997///
CY  - New Delhi
PB  - Anmol Publications
KW  - Environmental Sciences
ER  -