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Language: English
Collection
291,149
Electronic Access
143,475
Gov Pub Electronic
137,588
Main Books 3rd Floor
75,528
Gov Pub Microfiche
58,262
Storage Gov Pub
24,313
CO Gov Pub Electronic
more ...
8,115
Storage Books
7,418
Storage Folded Maps
5,517
Audio and Visual 1st Floor
5,445
Juv Coll 2nd Floor
5,387
Microfilm 2nd Floor
4,856
Spec Coll 3rd Floor
3,310
Ref Coll 1st Floor
2,557
New Books 1st Floor
2,025
Spec Coll Energy 3rd Floor
1,856
Storage Flat Maps
1,822
Flat Maps 2nd Floor
1,412
Oversize 3rd Floor
1,295
Storage Periodicals
1,072
Storage Gov Pub Media
822
Gov Pub Ref 1st Floor
474
Storage Microfiche
422
Reserve 1st Floor
421
Bestsellers 1st Floor
386
Periodicals
308
Storage Colo Doc
88
Microfiche 2nd Floor
66
Ref Oversize 1st Floor
56
Spec Coll Oversize 3rd Floor
55
Special Coll Rare Books
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Format
259,214
Book
258,804
eBook
139,981
Electronic
39,375
Microfilm
34,579
Video
18,765
Map
more ...
11,777
Unknown
7,844
Serial
4,660
Text
2,574
Journal
2,069
DVD
1,646
CD
1,571
Musical Score
1,020
VHS
743
Record
664
Software
653
Photo
387
Audio
265
Manuscript
180
Slide
139
StillImage
96
Cassette
21
Blu-ray Disc
19
Kit
19
Text; Still Image
17
Brochure
17
Still Image
16
Sensor Image
12
Physical Object
12
Text; StillImage
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Subject
14,274
Geology
9,293
Appropriations and expenditures
6,693
Rules and practice
6,526
Management
5,271
United States Foreign relations
4,806
Mines and mineral resources
more ...
4,673
Groundwater
4,354
Geology, Stratigraphic
4,316
Water quality
4,313
History
4,264
Artificial intelligence
4,219
Officials and employees
4,078
Economics
3,386
Health
3,195
Business
3,122
Water-supply
2,956
United States Politics and government
2,878
Criticism and interpretation
2,778
United States History
2,726
National security
2,724
Auditing
2,702
Computer security
2,561
Evaluation
2,085
Entrepreneurship
2,034
Selection and appointment
2,030
Computer science
1,984
United States
1,907
Mathematics
1,813
Aquifers
1,804
Computer networks
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Author
110,845
SpringerLink (Online service)
39,598
ScienceDirect (Online service)
30,737
Geological Survey (U.S.)
24,010
Infobase,
18,173
Geological Survey (U.S.),
15,222
Literature Online (Online Service)
more ...
12,928
Oxford Scholarship Online
11,564
Films for the Humanities & Sciences (Firm)
11,523
Infobase
10,614
Library of Congress. Congressional Research Service,
7,544
EBSCOhost
4,018
United States,
3,387
United States. Bureau of Mines
2,564
Educational Resources Information Center (U.S.)
2,515
National Renewable Energy Laboratory (U.S.),
2,462
Law Library of Congress (U.S.). Global Legal Research Directorate,
2,427
United States. Congress. House. Committee on Rules
2,333
U.S. Fish and Wildlife Service
2,194
United States. National Park Service
2,135
United States. Bureau of Land Management
2,123
Prendismo, LLC (Firm)
2,023
United States. Congress. Senate. Committee on Energy and Natural Resources
1,978
ProQuest (Firm)
1,817
United States. Forest Service
1,777
Colorado State University. Cooperative Extension Service
1,686
National Renewable Energy Laboratory (U.S.)
1,663
United States. Environmental Protection Agency
1,630
Public Broadcasting Service (U.S.)
1,511
United States. Bureau of the Census
1,477
United States. Congress. House. Committee on the Judiciary
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Language
English
5,003
eng
4,033
French
3,784
German
3,162
Spanish
1,445
Russian
more ...
1,152
Italian
659
Chinese
532
Japanese
484
Latin
409
Undetermined
299
Portuguese
278
Ancient Greek
206
Dutch
202
Arabic
199
Multiple
195
Polish
167
No linguistic content
166
Swedish
145
Greek
134
Hebrew
115
Korean
114
Norwegian
113
Czech
110
Hungarian
102
Danish
43
Romanian
40
Turkish
35
Persian
35
Vietnamese
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Genre
35,652
Conference papers and proceedings
28,565
Fiction
24,162
Video recordings
21,947
Maps
21,687
Internet videos
19,583
Sound recordings
more ...
16,902
Dictionaries
14,251
Periodicals
13,890
Legislative hearings
13,226
Biographies
12,871
Statistics
11,679
Handbooks and manuals
10,703
Bibliographies
9,208
Legislative materials
6,990
Technical reports
3,741
Case studies
3,680
Congresses
3,401
Topographic maps
3,054
Autobiographies
2,719
Statutes and codes
2,673
Instructional television programs
2,601
Treaties
2,520
Drama
2,440
Catalogs
2,181
Literature
1,831
Illustrated works
1,594
Directories
1,540
Academic theses
1,510
Picture books
1,469
Encyclopedias
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Literary Form
Era
10,754
20th century
4,735
19th century
2,720
21st century
1,496
18th century
1,016
1564-1616
985
Civil War, 1861-1865
more ...
946
17th century
875
1945-
837
Cretaceous
740
1945-1989
575
16th century
546
1933-1945
517
Revolution, 1775-1783
498
1946-
485
1989-
445
Tertiary
433
To 1500
417
Quaternary
410
2009-
389
2001-2009
386
Early modern, 1500-1700
372
Colonial period, ca. 1600-1775
351
1991-
346
Precambrian
335
Paleozoic
294
Cenozoic
278
1960-
270
1951-
259
2000-
250
Permian
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Region
185,612
United States
28,641
Colorado
8,581
California
7,103
Great Britain
5,265
China
5,220
Alaska
more ...
3,867
Utah
3,840
New Mexico
3,789
Europe
3,612
Arizona
3,356
Nevada
3,197
West (U.S.)
3,102
Texas
2,986
Wyoming
2,953
Montana
2,927
Oregon
2,855
Washington (State)
2,719
New York (State)
2,473
Florida
2,364
Idaho
2,329
Japan
2,255
India
2,011
England
1,962
Mexico
1,921
France
1,844
Germany
1,809
North America
1,749
Washington (D.C.)
1,702
Pennsylvania
1,639
Canada
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Call Number
93,363
Q - Science
63,255
H - Social Science
60,111
T - Technology
50,723
K - Law
41,497
P - Language and Literature
36,157
R - Medicine
more ...
36,156
E - United States History
31,864
L - Education
24,044
G - Geography, Anthropology, Recreation
17,957
D - World History
16,387
A - General Works
15,864
B - Philosophy, Psychology, Religion
13,230
F - General American History
13,046
S - Agriculture
12,257
J - Political Science
12,062
M - Music
10,333
N - Fine Arts
10,011
C - Historical Sciences
3,492
Z - Library Science
2,125
U - Military Science
1,876
V - Naval Science
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Year of Publication