Rivers and harbors bill. Hearings before the committee on Rivers and Harbors House of Representatives, Seventy ninth Congress, second session, on H. R. 6407 a bill authorizing the construction, repair, and preservation of certain public works on rivers and harbors, and for other purposes, April 9, 10, 11, 12, 15, 16, 17, 18, and May 3, 6, and 9, 1946.

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