Author
Geological Survey (U.S.),
19
Geological Survey (U.S.)
12
United States. Bureau of Mines
10
Fries, Carl, 1910-1965
4
Sainsbury, C. L. 1921-
4
Cobb, Edward H. 1916-1983
3
Fries, Carl, 1910-1965,
3
Graton, L. C. 1880-
3
Mulligan, John J., 1918-
3
Smith, Ward C., 1906-1998
3
Barker, James C.
2
Brown, L. L. 1928-
2
Cathcart, S. H. 1889-
2
Cochran, A. A.
2
Dahlin, D. C. 1951-
2
Du Bray, E. A.
2
Gannett, Henry, 1846-1914
2
Hess, Frank Lee, 1871-1955
2
Kershner, Kenneth K.
2
Knopf, Adolph, 1882-1966
2
Sandell, W. G.
2
ScienceDirect (Online service)
2
Smith, Ward C., 1906-1998,
2
Taylor, Roger G.
2
United States. Interdepartmental Committee on Scientific and Cultural Cooperation,
2
Universidad Nacional Autónoma de México. Instituto de Geología,
2
Warner, J. Dean
2
Alminas, Henry V., 1938-
1
Arnold, Ralph, 1875-1961
1
Bain, Harry Foster, 1872-1948
1
Bassler, Ray S. 1878-1961
1
Bauerle, L. C.
1
Clarke, Frank Wigglesworth, 1847-1931
1
Collier, Arthur J. 1866-1939
1
Collier, Arthur J. 1866-1939,
1
Cox, Leslie J.
1
Cruz, Edwin L.
1
Curtin, Gary C., 1935-
1
Dale, T. Nelson 1845-1937
1
Dean, K. C.
1
Diller, J. S. 1850-1928
1
Drew, Lawrence J.
1
Du Bray, E. A.,
1
Elliott, G. S.,
1
Fawns, Sydney
1
Fisher, Cassius A. 1872-1930
1
Foley, Jeffrey Y.
1
Foshag, William F. 1894-1956
1
Foshag, William F. 1894-1956,
1
Gianella, V. P.,
1
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