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1by Hill, Robert Thomas, 1858-1941“...Department of the Interior, United States Geological Survey,...”
Published 1887
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2by White, Charles A. (Charles Abiathar), 1826-1910“...Department of the Interior, United States Geological Survey,...”
Published 1891
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3“...Department of the Interior, United States Geological Survey,...”
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4“...Department of the Interior, United States Geological Survey,...”
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5by Gannett, Henry, 1846-1914“...Department of the Interior, United States Geological Survey,...”
Published 1902
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6“...Department of the Interior, United States Geological Survey,...”
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7by Gannett, Henry, 1846-1914“...Department of the Interior, United States Geological Survey,...”
Published 1904
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8by Cragin, Francis Whittemore, 1858-1937“...Department of the Interior, United States Geological Survey,...”
Published 1905
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9Published 1916“...Department of the Interior, United States Geological Survey,...”
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10by Marshall, R. B. (Robert Bradford), 1867-1949“...Department of the Interior, United States Geological Survey,...”
Published 1916
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11by Weed, Walter Harvey, 1862-1944“...Department of the Interior, United States Geological Survey,...”
Published 1901
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12by Adams, George I. (George Irving), 1870-1932“...Department of the Interior, United States Geological Survey,...”
Published 1901
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13by Matson, George Charlton, 1873-“...Department of the Interior, United States Geological Survey,...”
Published 1916
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14by Fenneman, Nevin Melancthon, 1865-1945“...Department of the Interior, United States Geological Survey,...”
Published 1906
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15by Hillebrand, W. F. (William Francis), 1853-1925, Schaller, Waldemar T. (Waldemar Theodore), 1882-1967“...Department of the Interior, United States Geological Survey,...”
Published 1909
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16by Paige, Sidney, 1880-1968“...Department of the Interior, United States Geological Survey,...”
Published 1911
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17by Marshall, R. B. (Robert Bradford), 1867-1949“...Department of the Interior, United States Geological Survey,...”
Published 1911
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18by Campbell, Marius R. (Marius Robinson), 1858-1940“...Department of the Interior, United States Geological Survey,...”
Published 1923
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19by Trowbridge, Arthur C. (Arthur Carleton), 1885-“...United States Department of the Interior, Geological Survey,...”
Published 1932
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20“...United States Department of the Interior, Geological Survey,...”
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