TY  - BOOK
AU  - Gupta,P.K.
TI  - Methods in environmental analysis: water soil and air 
T2  - 2nd edition
SN  - 8177543083 (hardcover)
PY  - 2011///
CY  - [S.l.]
PB  - Agrobios
UR  - http://www.amazon.com/exec/obidos/ASIN/8177543083/chopaconline-20
ER  -