http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Surface water supply of the United States, 1951
Ohio River Basin except Cumberland and Tennessee River basins
1 online resource (xi, 513 pages) : illustrations, map
prepared under the direction of C.G. Paulsen.
"Prepared in cooperation with the States of Illinois, Indiana, Kentucky, Maryland, New York, Ohio, Pennsylvania, Virginia, and West Virginia and with other agencies."
Surface water supply of the United States, 1951. Part 3 A, Ohio River Basin except Cumberland and Tennessee River basins
Geological Survey water-supply paper ; 1205