http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Analysis of regional aquifers in the central Midwest of the United States in Kansas, Nebraska, and parts of Arkansas, Colorado, Missouri, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming
vii, 67 pages : illustrations, maps (some color) ; 28 cm.
Includes bibliographical references (A65 - A67).
U.S. Geological Survey professional paper ; 1414-A
Regional aquifer-system analysis--Central Midwest