Author
Geological Survey (U.S.)
3
Garrett, Donald E.
2
Geological Survey (U.S.),
2
Allen, Robert Day
1
Allen, Robert Day,
1
Alley, John K.
1
Gale, Hoyt S. 1876-1952
1
Hance, James H.
1
Hemingway, Bruce S.
1
Hewett, D. F. 1881-1971
1
Johnson, Robert C.
1
Long, Albert E.
1
Mendenhall, Walter C. 1871-1957
1
Miser, Hugh D. 1884-1969
1
Muessig, Siegfried, 1922-
1
Obert, Leonard, 1906-
1
Phalen, W. C. 1877-1949
1
Richards, R. W. 1879-
1
Schaller, Waldemar T. 1882-1967
1
ScienceDirect (Online service)
1
Smith, Ward C., 1906-1998
1
United States. Bureau of Mines
1
United States. Forest Service. Southern Region
1