Powell, J. W. (1875). Exploration of the Colorado river of the west and its tributaries. Explored in 1869, 1870, 1871, and 1872, under the direction of the secretary of the Smithsonian Institution (1a. ed.). Government Printing Office.
Citace podle Chicago (17th ed.)Powell, J. W. Exploration of the Colorado River of the West and Its Tributaries. Explored in 1869, 1870, 1871, and 1872, Under the Direction of the Secretary of the Smithsonian Institution. 1a. ed. Washington, D.C: Government Printing Office, 1875.
Citace podle MLA (9th ed.)Powell, J. W. Exploration of the Colorado River of the West and Its Tributaries. Explored in 1869, 1870, 1871, and 1872, Under the Direction of the Secretary of the Smithsonian Institution. 1a. ed. Government Printing Office, 1875.
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