http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Water quality in principal aquifers of the United States, 1991-2010
1 online resource (150 pages) : PDF file, illustrations (some color), maps (some color) ; 118 MB.
Overview of major findings and implications -- Principal aquifers and NAWQA approach to assessing groundwater quality -- Aquifers and processes affecting groundwater quality -- Quality of groundwater resources for drinking and other uses -- Understanding where and why constituents from geologic sources occur -- Understanding where and why contaminants from human activities occur -- How does our use of water affect groundwater quality? -- How is groundwater quality changing?
by Leslie A. DeSimone, Peter B. McMahon, and Michael R. Rosen.
Title from title screen (viewed on February 17, 2015).
"National Water-Quality Assessment Program."
GPO Cataloging Record Distribution Program (CRDP).
Includes bibliographical references (pages 134-144).