Author
Michigan. Geological Survey Division
Geological Survey (U.S.)
7
Wier, K. L. 1914-
3
Balsley, J. R.
2
Geological Survey (U.S.),
2
James, H. L. 1912-2000
2
Good, Stanley E., 1919-1949,
1
James, H. L. 1912-2000,
1
King, Elizabeth R.
1
Kirby, John R.
1
Pettijohn, F. J. 1904-1999,
1
Pratt, William P.
1
Prinz, William C., 1928-
1
Zietz, Isidore, 1919-
1