Gilliom, Robert J. <br/><br/>
Pesticides in the nation's rivers, 1975-1980, and implications for future monitoring / 
by Robert J. Gilliom, Richard B. Alexander, and Richard A. Smith 
 - Washington, D.C. :  United States of Government Printing Office,  1985 
 - iv, 26 p. :  ill. ;  28 cm. 
 - U.S. Geological Survey water-supply paper ;  2271 .
<br/><br/>Bibliography: p. 23 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pesticides--Environmental aspects--United States<br/>Water--Analysis
<br/><br/><label>Dewey Class. No.: </label>363.7394