Author
Geological Survey (U.S.)
2,699
U.S. Atomic Energy Commission
180
U.S. Fish and Wildlife Service
114
United States. National Aeronautics and Space Administration
68
United States. National Park Service
55
Smithsonian Institution. Press
49
Rocky Mountain Research Station (Fort Collins, Colo.)
47
United States. Bureau of Land Management
46
United States. Bureau of Mines
45
Geological Survey (U.S.),
38
Marshall, R. B. 1867-1949
34
National Wetlands Research Center (U.S.)
32
Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.)
32
Kentucky Geological Survey
31
National Science Foundation (U.S.)
28
National Water-Quality Assessment Program (U.S.)
28
United States. Department of Energy
28
United States. National Oceanic and Atmospheric Administration
28
Sims, P. K. 1918-2011
24
Smith, Philip S. 1877-1949
23
Stover, Carl W.
23
U.S. Fish and Wildlife Service. Region 1
23
United States. Bureau of Reclamation
23
Cobban, William A., 1916-2015
22
Imlay, Ralph W. 1908-1989
22
Moffit, Fred H. 1874-1958?
22
Rabbitt, Mary C.
22
Mertie, John Beaver, 1888-1980
19
Sando, William Jasper
19
U.S. Army Engineer Waterways Experiment Station. Coastal Ecology Group
19
United States. Bureau of Indian Affairs
19
United States. Forest Service
19
Weld, Betsy A.
19
California. Division of Mines and Geology
18
Darton, Nelson Horatio, 1865-1948
18
Drewes, Harald, 1927-2015
18
National Center for Education Statistics
18
Ross, Clyde P. 1891-1965
18
United States. Agency for International Development
18
United States. Congress. Office of Technology Assessment
18
United States. Environmental Protection Agency
18
Evans, James George, 1938-
17
Ransome, F. L. 1868-1935
17
United States. Interdepartmental Committee on Scientific and Cultural Cooperation
17
Goddard Space Flight Center
16
United States. Environmental Protection Agency. Office of Research and Development
16
Clarke, Frank Wigglesworth, 1847-1931
15
Du Bray, E. A.
15
Roehler, Henry W.
15
United States. Army. Corps of Engineers
15
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