http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Ground-water resources of the Lower Rio Grande Valley area, Texas
1 online resource (v, 56 pages, 5 pages of plates) : illustrations, maps.
"Prepared in cooperation with the Texas Board of Water Engineers and the Lower Rio Grande Valley Chamber of Commerce."
Includes bibliographical references (pages 54-56).
Geological Survey water-supply paper ; 1653