http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Conceptual model of the uppermost principal aquifer systems in the Williston and Powder River structural basins, United States and Canada
1 online resource (viii, 41 pages) : illustrations (some color), color maps + appendix.
GPO Cataloging Record Distribution Program (CRDP).
Includes bibliographical references (pages 30-35).
Scientific investigations report ; 2014-5055