TY  - GEN
AU  - Trivedi R.N.
TI  -   A texbook of enviromental science
SN  - 8170416825
U1  - 363.7 
PY  - 1993///
CY  - New Delhi
PB  - Anmol Publications
KW  - ASSOCITION
KW  - OTHER SOCIAL PROBLEMS & SERVICE
KW  - SOCIAL SERVICE
ER  -