TY  - BOOK
AU  - Kumar, Arvind.
AU  - Kumar, Arvind.
TI  - A text book of environmental science
SN  - 81-7648-589-6
U1  - 363.7 KUT 22
PY  - 2004///
CY  - New Delhi
PB  - A.P.H. Publishers Corporation.
KW  -  
KW  - Environmental problems
ER  -