http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Groundwater quality in the Rio Grande aquifer system, southwestern United states
National Water-Quality Assessment Program (U.S.)
1 online resource (4 unnumbered pages) : color maps.
by MaryLynn Musgrove and Laura M. Bexfield.
At head of title: National Water Quality Program, National Water-Quality Assessment Project.
Includes bibliographical references (page 4).
Fact sheet (Geological Survey (U.S.)) ; 2017-3047