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	1.	No cover image available Analysis and interpretation of water-quality trends in major U.S. rivers, 1974-81 / by Richard A. Smith, Richard B. Alexander, and M. Gordon Wolman by Smith, Richard A, 1945- Alexander, Richard B Wolman, M. Gordon (Markley Gordon), 1924- Series: U.S. Geological Survey water-supply paper ; 2307 Material type: Text; Format: print ; Literary form: Not fiction Language: English Publication details: Washington, DC : GPO, 1987 Availability: Items available for loan: National Library of India (1)Call number: U.S.363.70973 Sm 657 (Bul no.2307). Place hold Request article Save to lists
	2.	No cover image available Pesticides in the nation's rivers, 1975-1980, and implications for future monitoring / by Robert J. Gilliom, Richard B. Alexander, and Richard A. Smith by Gilliom, Robert J Alexander, Richard B [jt. aut] Smith, Richard A, 1945- [jt. aut] United States of Government Printing Office Series: U.S. Geological Survey water-supply paper ; 2271 Material type: Text; Format: print ; Literary form: Not fiction Language: English Publication details: Washington, D.C. : United States of Government Printing Office, 1985 Availability: Items available for loan: National Library of India (1)Call number: U.S 363.7394 G 416(no. 2271). Place hold Request article Save to lists

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