TY  - BOOK
AU  - Tyagi,O.D., Mehra, M.
AU  - x
TI  - A text book of environmental Chemistry: x
SN  - x
U1  - 573.4/T977t 
PY  - 1996///
CY  - New Delhi
PB  - Anmol Pub.
KW  - Chemistry, Environmental
N1  - x
ER  -