1. Water Quality and Treatment – A Handbook of Community Water Supplies, American Water Works Association, Mc Graw-Hill, New York, 1990
2. Metal Pollution in the Aquatic Environments;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