1. Water Quality and Treatment–A Handbook of Community Water Supplies, American Water Works Association, McGraw-Hill, New York (1990).
2. Metal Pollution in the Aquatic Environment;Forstner,1983
3. Industrial Wastewater Treatment;Edwards,1995
4. Ion Exchange Technology–Advances in Pollution Control;Sengupta,1995
5. Chromate ion exchange mechanism for cooling water