TY  - BOOK
AU  - Tyagi, O.D.
AU  - Mehra, M.
TI  - Atextbook of environmental chemistry
SN  - 8170413524
U1  - 574.5222 
PY  - 2006///
CY  - New Delhi
PB  - Anmol
KW  - Envermental Chemistry
KW  -  Chemistry
N1  - E S
ER  -