Preservation of Niagara Falls : Message from the President of the United States, transmitting information relative to scientific investigations made by certain officers of the War department, for the preservation of Niagara Falls

Forente stater
Bok · Engelsk · 1911

Utgitt	Washington : G.P.O. , 1911
Omfang	173 s. : ill.
Emner	Niagara Falls (N.Y. and Ont.)