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 Part VII. Lower Mississippi River Basin
Water-supply paper 507; Surface water supply of U.S., 1919-20, pt. 7: Lower Mississippi River basin
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ProQuest U.S. Serial Set Digital Collection