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1.
Activated sludge process using pure oxygen / Edward A. Wilcox and Samuel O. Akinbami 1974 by Series: Environmental protection technology series
Material type: Text Text; Format: print ; Literary form: Not fiction
Language: English
Publication details: Washington : U.S. Govt. Print. Off., 1974
Availability: Items available for loan: National Library of India (1)Call number: U.S. 363.7392 W 643 a.

2.
Activated sludge process using pure oxygen by Series: Environmental protection Technology series
Material type: Text Text; Format: print ; Literary form: Not fiction
Language: English
Publication details: Washington : Office of Researh and Development, 1974
Availability: Items available for loan: National Library of India (1)Call number: U.S 628.354 Us 3 w.

                                                                           
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