Nitrate loads and concentrations in surface-water base flow and shallow groundwater for selected basins in the United States, water years 1990-2006
By: by Norman E. Spahr ... [et al.].
Contributors: Geological Survey (U.S.); National Water-Quality Assessment Program (U.S.)
Series: Scientific investigations report -- 2010-5098; Scientific investigations report -- 2010-5098.
Publisher: U.S. Geological Survey
Published: 2010
Place of publication: Reston, Va
Language: eng
Number of pages: 39
ISBN-13: 9781411328594
Subjects: Water; Quality; Nitrogen content; Nitrates; Groundwater
Notes: "National Water-Quality Assessment Program."

Includes bibliographical references (p. 19-20).

Also available via Internet.