http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Water quality of groundwater used for public supply in principal aquifers of the western United States
National Water-Quality Assessment Program (U.S.)
1 online resource (x, 142 pages) : color illustrations, color maps.
by Celia Z. Rosecrans and MaryLynn Musgrove.
Scientific investigations report ; 2020-5078