TY  - BOOK
AU  - Radha, S  & Sankhyan, Amar Singh
TI  - Environmental challenges of the 21st century
SN  - 81-7629-359-8
U1  - 301.3 Rad/San 
PY  - 2002///
CY  - Deep and Deep, New Delhi
KW  - ENVIRONMENT
KW  - Sociology
ER  -