http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
physical framework of the Great Plains aquifer system
7 maps on 2 sheets ; 37 x 69 cm., or smaller, sheets 102 x 137 cm. and 86 x 127 cm., folded in envelope 30 x 24 cm.
U.S. Department of the Interior, U.S. Geological Survey ; by J.M. Spinazola, R.J. Wolf, and H.E. McGovern.
Includes text, bibliography, cross section, table, and index map.
Hydrologic investigations atlas ; HA-722-B
Regional aquifer-system analysis--Central Midwest