References
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- APHA-AWWA-WPCF . 1992 . Standard Methods for the Examination of Water and Wastewater , 17th ed.
- 2007 . USEPA www.epa.gov
- 2007 . Indian Standards www.bis.org.in
- Chobanoglous , G. and Schroeder , E. D. 1985 . Water Quality: Characteristics, Modeling, Modification , Reading , MA : Addison-Wesley .
- Metcalf & Eddy, Inc. 1991 . “ Wastewater Engineering ” . In Treatment, Disposal, Reuse , McGraw-Hill .