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	1.	No cover image available Water quality of hydrologic bench marks : an indicator of water quality in the natural environment / by James E. Biesecker and Donald K. Leifeste by Biesecker, James E, 1941- Leifeste, Donald K [jt. aut] Series: Conservation networks ; pt. E Material type: Text; Format: print ; Literary form: Not fiction Language: English Publication details: Washington, D. C. : U.S. Government Printing Office, 1974 Availability: Items available for loan: National Library of India (1)Call number: U.S 628.530973 B 478. Place hold Request article Save to lists
	2.	No cover image available Water quality of hydrologic bench marks : an indicator of water quality in the natural environment / by James E. Biesecker and Donald K. Leifeste by Biesecker, James E, 1941- Leifeste, Donald K [jt. aut] Series: Conservation networks ; pt. E Material type: Text; Format: print ; Literary form: Not fiction Language: English Publication details: Washington, D. C. : U.S. Government Printing Office, 1974 Availability: Items available for loan: National Library of India (1)Call number: U.S 628.530973 B 478. Place hold Request article Save to lists

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