Annual Assessment Work on Mining Claims : hearings before the United States House Committee on Mines and Mining, Sixty-Sixth Congress, first session, on Oct. 21, 22, 25, 1919.

MLA

United States. Annual Assessment Work on Mining Claims : hearings before the United States House Committee on Mines and Mining, Sixty-Sixth Congress, first session, on Oct. 21, 22, 25, 1919. Washington : U.S. G.P.O., 1919.

APA

United States. (1919). Annual Assessment Work on Mining Claims : hearings before the United States House Committee on Mines and Mining, Sixty-Sixth Congress, first session, on Oct. 21, 22, 25, 1919. Washington : U.S. G.P.O..

Chicago

United States. Annual Assessment Work on Mining Claims : hearings before the United States House Committee on Mines and Mining, Sixty-Sixth Congress, first session, on Oct. 21, 22, 25, 1919. Washington : U.S. G.P.O., 1919.