http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Surface water supply of the United States, 1961-65
Hudson Bay and Upper Mississippi River Basins. Hudson Bay Basin
Hudson Bay and Upper Mississippi River Basins
1 online resource (viii, 407 pages, 1 page of plates) : map.
"Prepared in cooperation with the States of Minnesota and North Dakota and with other agencies."
Surface water supply of the United States, 1961-65. Part 5, Hudson Bay and Upper Mississippi River Basins. Volume 1, Hudson Bay Basin
Geological Survey water-supply paper ; 1913