Author
Geological Survey (U.S.)
128
United States. Bureau of Land Management
54
United States. Bureau of Land Management. Arizona State Office
44
Geological Survey (U.S.),
26
National Operations Center (U.S.),
25
United States. Bureau of Land Management,
25
United States. Bureau of Land Management. Arizona State Office,
25
National Operations Center (U.S.)
19
National Science and Technology Center (U.S.)
18
University of Arizona. Bureau of Geology and Mineral Technology
13
National Applied Resource Sciences Center (U.S.)
11
Anderson, T. W. 1940-
6
Arizona. Department of Water Resources
6
Drewes, Harald, 1927-2015
6
United States. Defense Mapping Agency. Hydrographic/Topographic Center
6
United States. Environmental Protection Agency
5
Mowry, Sylvester, 1830-1871
4
Peterson, N. P. 1898-1982
4
Anderson, Charles A. 1902-1990
3
Hamilton, Patrick, active 19th century
3
Hayes, Philip T. 1923-
3
Johnson, William D.
3
Scarborough, Robert B.
3
U.S. Atomic Energy Commission
3
American Geographical Society of New York
2
Collings, M. R.
2
Cooper, John R. 1907-
2
Davis, Philip A. 1950-
2
EBSCOhost
2
Granger, H. C. 1925-
2
Heindl, L. A. 1916-
2
Johnson, William D.,
2
Langer, William H.
2
Langer, William H.,
2
New Mexico Geological Society. Annual Field Conference
2
Peirce, H. Wesley
2
Scarborough, Robert B.,
2
Sheppard, Richard A.
2
United States Board on Geographic Names
2
United States. Bureau of Indian Affairs
2
United States. Bureau of Land Management. Nevada State Office
2
University of Arizona
2
Writers' Program of the Work Projects Administration in the State of Arizona
2
American Automobile Association
1
Arizona Geological Society
1
Arizona. Legislative Assembly
1
Armstrong, Augustus K.
1
Atchison, Topeka, and Santa Fe Railroad Company
1
August, Jack L., Jr., 1954-
1
Barnes, Will C. 1858-1936
1
more ...