. Contributions to the geography of the United States, 1923-1924. Geology; Mines and mineral resources. Department of the Interior Hubert Work, Secretary U. S. GEOLOGICAL SURVEY George Otis Smith, Director Bulletin 760 CONTRIBUTIONS TO THE GEOGRAPHY OF THE UNITED STATES 1923-1924 MARIUS R. CAMPBELL GEOLOGIST IN CHARGE. WASHINGTON GOVERNMENT PRINTING OFFICE 1925. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Campbell, Mari
. Contributions to the geography of the United States, 1923-1924. Geology; Mines and mineral resources. Department of the Interior Hubert Work, Secretary U. S. GEOLOGICAL SURVEY George Otis Smith, Director Bulletin 760 CONTRIBUTIONS TO THE GEOGRAPHY OF THE UNITED STATES 1923-1924 MARIUS R. CAMPBELL GEOLOGIST IN CHARGE. WASHINGTON GOVERNMENT PRINTING OFFICE 1925. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Campbell, Marius R. (Marius Robinson), 1858-1940; Geological Survey (U. S. ). Washington [D. C. ] : U. S. Govt. Print. Off.
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectgeology, booksubjectm
