TY  - BOOK
AU  - Chitkara, M.G., 
TI  - Encyclopaedia of ecology, environment and pollution: vol.1-the mother earth / 
SN  - 81-7024-880-9
U1  - 577.03 
PY  - 1998///
CY  - New Delhi
PB  - APH Publishing
KW  - Earth-Encyclopaedias
N1  - Includes index
ER  -