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	1.	No cover image available Standard methods : for the examination of water and wastewater / American Public Health Association, American Water World Association and Water Pollution Control Federation by American Public Health Association American Water Works Association Water Pollution Control Federation Edition: 13th ed. Material type: Text; Format: print ; Literary form: Not fiction Language: English Publication details: Washington, D. C. : American Public Health Association, 1971 Availability: Items available for loan: National Library of India (1)Call number: E543.3 Am35. Place hold Request article Save to lists
	2.	No cover image available Nitrification of secondary municipal waste effluents by rotating bio-discs / Jack A. Borchardt...[et. al.] by Borchardt, Jack A United States. Environmental Protection Agency Material type: Text; Format: print ; Literary form: Not fiction Language: English Publication details: Washington : U.S. G.P.O., 1978 Availability: Items available for loan: National Library of India (1)Call number: U.S. 639.8028 Ni 638. Place hold Request article Save to lists
	3.	No cover image available The analysis of organic pollutants in water and waste water/ W. Leithe; translated from the German by STS, Incorporated; edited by Nin McClelland by Leithe, Wolfgang McClelland, Nina [edt] STS, Incorporated [trl] Material type: Text; Format: print ; Literary form: Not fiction Language: English Original language: German Publication details: Ann Arbor: Ann Arbor Science Pubs, c1973 Availability: Items available for loan: National Library of India (1)Call number: E 628.16 L 536. Place hold Request article Save to lists

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