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Drew - Principles of Industrial Water Treatment
Drew - book on water treatment recommended by Lenntech
www.lenntech.com/ scientific-books/ water-treatment/ Drew-principles-industrial-wastewater-treatment.htm
Scale inhibiting composition - Patent 5292449
Principles of Industrial Water Treatment, Drew Chemical Corporation, 1977, pp. 81-84. Primary Examiner:. Willis Jr., Prince. Assistant Examiner: ...