http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Detection of underground voids in Ohio by use of geophysical methods
1 online resource (vi, 28 pages) : illustrations, maps.
by Jens Munk and Rodney A. Sheets ; prepared in cooperation with the Ohio Department of Transportation and the U.S. Department of Transportation.
"Prepared in cooperation with the U.S. Department of Transportation, Federal Highway Administration"--Report documentation page.
Includes bibliographical references (pages 26-28).
Water-resources investigations report ; 97-4221