Author
ScienceDirect (Online service)
361
SpringerLink (Online service)
307
Colorado Natural Heritage Program
218
Ebooks Corporation
120
SpringerLink (Online Service)
114
Geological Survey (U.S.)
103
ScienceDirect (Online Service)
52
Oxford Scholarship Online
41
Colorado Geological Survey
40
United States. Forest Service. Rocky Mountain Region
40
Anderson, David G. (Botanist)
36
U.S. Fish and Wildlife Service
29
Panjabi, Susan
26
Utah Geological Survey
25
Decker, Karin 1959-
24
Sovell, John R.
22
Lyon, Peggy
21
Culver, Denise R.
20
Rocchio, F. Joseph
20
Kornicker, Louis S., 1919-2018
19
ProQuest (Firm)
19
Colorado. Department of Natural Resources
18
Colorado. Division of Wildlife
16
Smithsonian Institution. Press
15
United States. Bureau of Land Management
15
United States. Environmental Protection Agency. Region VIII
11
Great Lakes Environmental Research Laboratory
10
Keller, John W. 1964-
10
Kettler, Steve
10
Mathis, Wayne N.
10
Neid, Stephanie
10
Rondeau, Renée Jane
10
Vari, Richard P.
10
Grunau, Lee 1959-
9
Iliffe, Thomas M.
9
TerBest, Harry
9
United States. Forest Service
9
United States. National Park Service
9
Colorado Nature Conservancy
8
Colorado Rare Plant Conservation Initiative
8
Doyle, Georgia Ann
8
Garrison, Rachel E.
8
Nature Conservancy (U.S.)
8
Schorr, Robert A.
8
Dixon, Frank J. 1920-2008
7
National Museum of Natural History (U.S.)
7
Neely, Betsy
7
Pague, Christopher A.
7
Stevens, Joe
7
Cooperative Geological Mapping Program (U.S.)
6
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