References Filtration
1. Coccagno, Luciano, Filtration: Theoretical Considerations &
Practical. Results, Culligan International Company. 2. McPeak, John F. and
Harold L. Aronovitch, Iron in Water and Processes for Its Removal, Hungerford
and Terry Inc. , Clayton, N.J. , 1983. 3. Guidelines for Canadian Drinking Water
Quality, 4th ed., Minister of National Health and Welfare, Ottawa, 1989. 4.
Nalco Water Treatment Handbook, 2nd ed., edited by Frank N. Kemmer, McGraw-Hill
Inc., New York, 1988. Softening 1. Owens, Dean L. ,
Practical Principles of Ion Exchange Water Treatment, Tall Oaks Publishing,
Inc., Voorhees NJ, 1985. 2. Sybron Chemicals Inc., A Look at the Synthesis of
Ion-Exchange Resins, McGraw-Hill Publishing Co. inc., New York,1963. High Purity 1. Meltzer, Theodore H., High Purity Water
Preparation, Tall Oaks Publishing, Inc., Littleton, CO, 1993.
A．below an article on water purification B．below an article on health and medicare C．in a do-it-yourself book D．in an operation manual