http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Surface water supply of the United States, 1919-1920
1 online resource (iii, 49 pages) : illustrations.
by Nathan C. Grover, Chief Hydraulic Engineer, Robert Follansbee and R.C. Rice, District Engineers.
Surface water supply of the United States, 1919-1920. Part 7, Lower Mississippi River basin
Water-supply paper (Washington, D.C.) ; no. 507