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	1.	No cover image available Nitrogen removal by ammonia stripping / by Thomas P. O'Farrell...[et. al.] by O'Farrell, Thomas P United States. Environmental Protection Agency United States. Office of Research and Monitoring Series: Environmental protection technology series Material type: Text; Format: print ; Literary form: Not fiction Language: English Publication details: Washington, D.C. : U.S. Environmental Protection Agency, 1973 Availability: Items available for loan: National Library of India (1)Call number: U.S 628.357 Ni 638. Place hold Request article Save to lists
	2.	No cover image available Ammonia-nitrogen removal by breakpoint chlorination / by Thomas A. Pressley...[et. al.] by United States. Environmental Protection Agency Pressley, Thomas A United States. Office of research and development Series: Environmental protection technology series Material type: Text; Format: print ; Literary form: Not fiction Language: English Publication details: Washington, D.C. : U.S. Environmental Protection Agency, 1973 Availability: Items available for loan: National Library of India (1)Call number: U.S 628.357 Am 61. Place hold Request article Save to lists

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