Herbicides and nitrate in near-surface aquifers in the midcontinental United States, 1991
By: by Dana W. Kolpin, Michael R. Burkart, and E. Michael Thurman.
Contributors: Burkart, M. R.; Thurman, E. M. 1946-
Series: U.S. Geological Survey water-supply paper ;; 2413
Publisher: U.S. G.P.O.; for sale by USGS Map Distribution
Published: 1994
Place of publication: Washington; Denver, CO
Language: eng
Number of pages: 34
Subjects: Herbicides -- Environmental aspects.; Nitrates -- Environmental aspects.; Groundwater -- Pollution -- Middle West.
Notes: Includes bibliographical references (p. 33-34).