Author
Geological Survey (U.S.)
393
Pennsylvania. Bureau of Topographic and Geologic Survey
50
United States. Bureau of Mines
45
Geological Survey of Pakistan
32
Kosanke, Robert M. (Robert Max)
29
Tennessee Valley Authority
26
United States. Agency for International Development
23
Flores, Romeo M.
20
Roberts, Laura N. Robinson
20
Tennessee. Division of Geology
20
Roehler, Henry W.
19
Warwick, Peter D.
18
Englund, Kenneth John, 1923-
15
Wood, Gordon H. (Gordon Harry), 1919-
15
Dodge, Clifford H.
14
Hardie, John K.
13
Kent, Bion H. (Bion Huntley), 1925-
13
Kentucky Geological Survey
13
Moebs, Noel N.
13
New Zealand. Ministry of Energy. Market Information and Analysis
13
Patterson, E. D. (Elmer Davisson)
13
Puglio, D. G. (Donald G.)
13
Danilchik, Walter
12
Thomas, Roger E.
12
Biewick, Laura H.
11
Denson, N. M. (Norman MacLaren), 1914-
11
Iannacchione, Anthony T.
11
Skema, Viktoras W.
11
United States. Bureau of Land Management
11
Arndt, Harold H.
10
Hettinger, Robert D.
10
National Coal Resource Assessment (U.S.)
10
Stanton, Ronald W.
10
Stracher, Glenn B.
10
West Virginia Geological and Economic Survey
10
Cecil, C. B.
9
Glover, Albert D.
9
Johnson, Edward A. (Edward Allison), 1940-
9
Pennsylvania. Department of Environmental Resources
9
Van Lieu, J. A.
9
Barnes, Farrell F. (Farrell Francis), 1905-1980
8
Connor, Carol Waite
8
Edmunds, William E.
8
Fassett, James E.
8
Kirschbaum, Mark A.
8
Roberts, Stephen B.
8
Swingle, George D.
8
United States. Bureau of Indian Affairs
8
Virginia. Division of Mineral Resources
8
Barnum, Bruce E.
7
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