Author
Geological Survey (U.S.)
8
Sargent, Kenneth A.
3
Hills, Francis Allan
2
Jenness, Jane E.
2
Brooks, Howard C.
1
California. Division of Mines and Geology
1
Ferns, M. L.
1
Gwinn, V. E.
1
Idaho. Department of Water Resources
1
Johnson, William D.
1
Montana Bureau of Mines and Geology
1
Mullen, E. D.
1
Nevada Bureau of Mines and Geology
1
New Mexico. Bureau of Mines and Mineral Resources
1
Oregon. Department of Geology and Mineral Industries
1
Roggensack, Kurt
1
Scarborough, Robert B.
1
United States. Forest Service. Southwestern Region
1
University of Arizona. Bureau of Geology and Mineral Technology
1
Utah Geological and Mineral Survey
1
Wallace, C. A. 1942-
1