1. Trace Elements in Soil and Plants;Kabata-Pendias,2001
2. Toxic Effects of Metals;Goyer,1996
3. Introduction to Mineralogy;Nesse,2000
4. Toxicological Profile for Arsenic (Update),2001
5. Arsenic in soil and groundwater: An overview;Nriagu;Trace Metals Contamin. Environ,2007