TY  - BOOK
AU  - Trivedi,R.N.
TI  - Environmental problems: prospects and constraints 
SN  - 8170415643
AV  - GE160 .I4E5827 1992
U1  - 363.700954 
PY  - 1992///
CY  - Delhi
PB  - Anmol
KW  - Pollution
KW  - Environmental health
ER  -