http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Summary appraisals of the nation's ground-water resources--lower Colorado region
1 online resource (v, R23 pages) : illustrations, maps + 3 plates.
Title from title screen (viewed October 6, 2014).
"A general summary of ground-water availability and the potential for greater development or extension through more efficiencies of use."
Includes bibliographical references (pages R21-R23).
Geological Survey professional paper ; 813-R