House documents, 81st Congress. 215. Elkhorn River and tributaries, Nebr., letter from chief of engineers, Army, submitting report on review of report on, and preliminary examination and survey of Platte River, Colo., Wyo., and Nebr., with view to improvements for flood control and allied purposes on Elkhorn River and tributaries, Nebr.
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Elkhorn River and tributaries, Nebr., letter from chief of engineers, Army, submitting report on review of report on, and preliminary examination and survey of Platte River, Colo., Wyo., and Nebr., with view to improvements for flood control and allied purposes on Elkhorn River and tributaries, Nebr.
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House documents, 81st Congress. 215. Elkhorn River and tributaries, Nebr., letter from chief of engineers, Army, submitting report on review of report on, and preliminary examination and survey of Platte River, Colo., Wyo., and Nebr., with view to improvements for flood control and allied purposes on Elkhorn River and tributaries, Nebr.