http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Surface water supply of the United States, 1939
1 online resource (xi, 578 pages, 1 page of plates).
"Prepared in cooperation with the States of Illinois, Indiana, Kentucky, Maryland, New York, North Carolina, Pennsylvania, Tennessee, Virginia, and West Virginia and other agencies."
Surface water supply of the United States, 1939. Part 3, Ohio River basin
Water-supply paper (Washington, D.C.) ; no. 873