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2. Industrial Water Pollution Control;Eckenfelder,1966
3. Wastewater Treatment Via Combined Biological Physico-Chemical Techniques;El-Gohary,1979
4. The Optimization of Wastewater Treatment Via Combined Techniques. Part II: Combined Biological Dissolved Air Flotation;El-Gohary;Environ. Int.,1980
5. Packinghouse Waste Processing Applied Improvement of Conventional Method;Garrison,1960