6Abhijit M, Alan E. F. Deeper groundwater chemistry and geo- chemical modeling of the arsenic accted western Bengal basin, West Bengal, India [ J ]. Applied Geochemistry,2008,23 (4).
7Mohsen Jalali. Geochemistry characterization of groundwater in an agricultural area of Razan, Hamadan, Iran [ J ]. Environ Ge- ol 2009, (56).