http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Surface water supply of the United States, 1931
1 online resource (ix, 346 pages) : illustration.
"Prepared in cooperation with the states of Illinois, Indiana, Kentucky, New York, North Carolina, Ohio, Tennessee, Virginia, and West Virginia."
Surface water supply of the United States, 1931. Part 3, Ohio River Basin
Water-supply paper (Washington, D.C.) ; no. 713