. . "Agua Abastecimiento Estados Unidos Mississippi, Cuenca del." . . "Surface water supply of the United States 1960. Pt. 5, Hudson Bay and upper Mississippi River basins" . . . "Hudson Bay and upper Mississippi River basins, 1960"@en . . . . . . "Surface water supply of the United States, 1960. Part 5, Hudson Bay and upper Mississippi River basins"@en . . . . . . . . . . . . "Agua Abastecimiento Estados Unidos Hudson Bay, Cuenca del." . .