Protection and preservation of navigable waters :
hearings before the Committee on Rivers and Harbors, House of Representatives, seventy-first Congress, third session on H.R. 11512, a bill amending the River and Harbor Act, approved March 3, 1899, for the protection and preservation of the navigable waters of the United States.
|Corporate Author:||United States.|
Washington : U.S. G.P.O., 1931.
Inland navigation /
Hearing held January 22, 1931.
ii, 25 pages ;
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