Author
Arnold, Ralph, 1875-1961
1
Biesecker, James E., 1941-
1
Brooks, Alfred H. 1871-1924
1
Campbell, Marius R. 1858-1940
1
Daugherty, Ann
1
Galford, Jimmy R.
1
Geological Survey (U.S.)
1
George, J. Richard
1
Grant, Bruce F.
1
Griswold, W. T., 1859-1931
1
Hendricks, E. L. 1909-
1
Marshall, R. B. 1867-1949
1
Northeastern Forest Experiment Station (Radnor, Pa.)
1
Williams, Roger N.
1