TY  - BOOK
AU  - Trivedi,R.N.
TI  - A text book of environmental sciences
SN  - 8170416825
AV  - GE105 .C53 1993
U1  - 363.7 
PY  - 1993///
CY  - New Delhi
PB  - Anmol publications
KW  - Environment
KW  - Biodiversity
KW  - Pollution
ER  -