References
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- ETC Limited . 1992 . “Anaerobic Digestion of Industrial Wastewater; A survey of potential application in United Kingdom industry” Newcastle Upon Tyne, , U.K.
- Greenberg , A.E. , Trussell , R.R. and Clisceri , L.S. 1985 . “Standard Methods for Examination of Water and Wastewater”;, , 16th edition Washington, DC