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	1.	No cover image available Inspector's guide : to be used in the evaluation of municipal wastewater treatment plants / by Daniel J. Hinrichs by Hinrichs, Daniel J United States. Environmental Protection Agency Material type: Text; Format: print ; Literary form: Not fiction Language: English Publication details: Washington, D.C. : United States Government Printing Office, 1979 Availability: Items available for loan: National Library of India (1)Call number: U.S 628.3 H 594. Place hold Request article Save to lists
	2.	No cover image available Operations manual : sludge handling and conditioning / by William F. Ettlich, Daniel J. Hinrichs and Thoman S. Lineck by Ettlich, William F Hinrichs, Daniel J [jt. aut] Lineck, Thoman S [jt. aut] United States. Environmental Protection Agency Material type: Text; Format: print ; Literary form: Not fiction Language: English Publication details: Washington, D.C. : U.S. Government Printing Office, 1978 Availability: Items available for loan: National Library of India (1)Call number: U.S 628.168 Et 76. Place hold Save to lists

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