http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Surface water supply of the United States, 1937
Hudson Bay and upper Mississippi River basins
1 online resource (viii, 334 pages) : illustration.
"Prepared in cooperation with the States of Illinois, Indiana, Iowa, Minnesota, Missouri, North Dakota, and Wisconsin."
Surface water supply of the United States, 1937. Part 5, Hudson Bay and upper Mississippi River basins
Water-supply paper (Washington, D.C.) ; no. 825