TY  - BOOK
AU  - Kumar , Ram
TI  - Encyclopedia of environmental science and technology
SN  - 8178900289(set)
U1  - R 333.703 
PY  - 2001///
CY  - New Delhi : 
PB  - Sarup & Sons Publication
KW  - Encyclopaedia
KW  - Environmental pollution
KW  - Air pollution
KW  - Water pollution
ER  -