TY  - BOOK
AU  -  Chhatwal,  G R
TI  - Encyclopaedia of environmental analysis / 
U1  - 363.739603 
PY  - 1997///
CY  - New Delhi : 
PB  - Anmol Publications, 
KW  - Encyclopaedia of environment
N1  - vol. 1-3
ER  -