TY  - BOOK
AU  - Trivedi,R.N.
TI  - A text book of environmental science by R.N. Trivedi
SN  - 8174885447
U1  - 363.7 Sa598e 1997 23
PY  - 1997///
CY  - Delhi
PB  - J.L. Anmol 
KW  - Environmental sciences
N1  - Includes index
ER  -