TY  - BOOK
AU  - Kumar , Arvind.
AU  - Kumar , Arvind.
TI  - Environmental challenges of the 21st century
SN  - 81-7648-406-7
U1  - 628.168 KUE 22
PY  - 2003///
CY  - New Delhi.
PB  - A.P.H.Publishers.
KW  - Pollution countermeasures.
KW  - Pollution countermeasures
ER  -