Author
Geological Survey (U.S.)
302
Geological Survey (U.S.),
174
Cuyahoga Valley National Park (Agency : U.S.),
40
United States. Forest Service,
39
United States,
31
Ohio. Department of Transportation
30
United States. National Park Service,
29
United States. National Park Service
27
Dumouchelle, D. H.
26
United States. Federal Highway Administration
21
United States. Forest Service
20
Ohio. Division of Reclamation
18
Ohio. Division of Water
18
Ohio Water Development Authority
17
United States. Department of the Army
17
Koltun, G. F.
16
United States. Congress. House. Committee on Transportation and Infrastructure
16
United States. Environmental Protection Agency
16
Francy, Donna S.
15
Cuyahoga Valley National Park (Agency : U.S.)
14
Columbus (Ohio)
13
Koltun, G. F.,
12
United States. Congress. Senate. Committee on Energy and Natural Resources
12
Brady, Amie M. G. 1975-
11
National Institute for Occupational Safety and Health,
11
United States. Congress. House. Committee on Resources
11
Darner, Robert A.
10
Educational Resources Information Center (U.S.)
10
National Water-Quality Assessment Program (U.S.)
10
Sheets, Rodney A. 1962-
10
Sherwood, James M. 1952-
10
Miami Conservancy District (Ohio)
9
New Martinsville (W. Va.)
9
Ohio EPA
9
Schalk, Charles W.
9
United States. Bureau of Labor Statistics
9
United States. Congress. House. Committee on Natural Resources,
9
United States. Forest Service. Eastern Region
9
Francy, Donna S.,
8
Oblinger, Carolyn J.
8
Ohio. Department of Natural Resources
8
Ostheimer, Chad J.,
8
United States. Congress. Senate. Committee on Energy and Natural Resources,
8
United States. Environmental Protection Agency. Office of Research and Development
8
Wright-Patterson Air Force Base (Ohio)
8
Kentucky Geological Survey
7
Midwest Archeological Center (U.S.),
7
Miller, Kimberly F.
7
Northeast Ohio Regional Sewer District (Ohio)
7
Spieker, Andrew Maute, 1932-
7
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