TY  - BOOK
AU  - Ramakrishnan, P S
AU  - Ramakrishnan,P S
TI  - Ecology and Sustainable Development
SN  - 8123736223   
U1  - N53 
PY  - 2001///
CY  - New Delhi
PB  - National Book Trust
N1  - includes index and biblioraphy
ER  -