http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Regional aquifers in Kansas, Nebraska, and parts of Arkansas, Colorado, Missouri, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming--geohydrologic framework
1 portfolio (1 volume, 1 graph, 1 sheet color cross sections, 23 color, folded maps) : illustrations, maps (some color) ; 29 cm.
by Donald G. Jorgensen, John O. Helgesen, and Jeffrey L. Imes.
One volume text includes bibliographical references (pages 68-72).
U.S. Geological Survey professional paper ; 1414-B
Regional aquifer-system analysis--Central Midwest