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1.
Infectious waterborne diseases / by Phillip E. Greeson by Series: Briefing papers on water quality | Geological Survey circular ; 848-D
Material type: Text Text; Format: print ; Literary form: Not fiction
Language: English
Publication details: Reston, VA : U.S. Geological Survey, 1981
Availability: Items available for loan: National Library of India (1)Call number: U.S 557.3 G 81.

2.
Biota and biological parameters as environmental indicators / United States, Department of Interior by Series: Geological Survey circular ; 848-13
Material type: Text Text; Format: print ; Literary form: Not fiction
Language: English
Publication details: [S.l.] : U.S. Department of Interior, 1981
Availability: Items available for loan: National Library of India (1)Call number: U.S 333.70973 Un 3.

                                                                           
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