TY  - BOOK
AU  - Choudhary, C. K
TI  - A-Z environmental science
SN  - 9789380106182
U1  - 333.7 CHO 
PY  - 2009///
CY  - New Delhi
PB  - Centrum Press
KW  - Earth sciences
KW  - Environmental sciences
N1  - Includes index
ER  -