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<br />Magnitude and Frequency of <br />Floods in the United States <br /> <br />Part 6-B. Missouri River Basin below Sioux City, Iowa <br /> <br />By H. F. MATIHAI <br /> <br />GEOLOGICAL SURVEY WATER-SUPPLY PAPER 1680 <br /> <br /> <br />~ <br /> <br />U:-IITED STATES GOVER:-IME:-IT PRINTI:-1G OFFICE, WASHINGTON, 1968 <br />