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Institution
Collection
526
Gov Pub Electronic
457
Storage Gov Pub
302
Gov Pub Microfiche
165
Main Books 3rd Floor
152
Storage Folded Maps
32
Electronic Access
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11
Juv Coll 2nd Floor
9
Audio and Visual 1st Floor
8
Spec Coll Energy 3rd Floor
8
Storage Flat Maps
7
Gov Pub Ref 1st Floor
5
New Books 1st Floor
4
CO Gov Pub Electronic
4
Spec Coll 3rd Floor
4
Storage Books
3
Microfilm 2nd Floor
2
Flat Maps 2nd Floor
2
Oversize 3rd Floor
1
Bestsellers 1st Floor
1
Ref Coll 1st Floor
1
Storage Gov Pub Media
1
Storage Microfiche
1
Storage Periodicals
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Format
Subject
183
Geology
85
Water quality
72
Groundwater
53
Geomagnetism
46
Hydrogeology
46
Mines and mineral resources
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44
Historic sites
43
Pennsylvania
39
Coal
37
Groundwater Pollution
33
Geology, Stratigraphic
33
Water-supply
30
Groundwater Quality
28
Stream measurements
27
Water table
25
Water Pollution
24
Anthracite coal
24
Groundwater flow
23
Coal Geology
23
Hydrology
23
Pennsylvania History
22
History
21
Historic sites Law and legislation
21
Streamflow
20
Coal mines and mining
20
Floods
20
Geophysical well logging
19
Aquifers
18
National parks and reserves
18
Nutrient pollution of water
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Author
402
Geological Survey (U.S.)
256
Geological Survey (U.S.),
72
United States. National Park Service
56
Chester County Water Resources Authority
52
United States. Bureau of Mines
49
Bromery, Randolph W. 1926-2013
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48
Zandle, Gerald L.
41
Pennsylvania. Department of Environmental Protection
41
United States. Environmental Protection Agency
40
Pennsylvania. Bureau of Topographic and Geologic Survey
31
Sloto, Ronald A.
29
Wood, Gordon H. 1919-
25
United States,
21
United States. Congress. Senate. Committee on Energy and Natural Resources
20
Sloto, Ronald A.,
19
Epstein, Jack Burton, 1935-
19
Susquehanna River Basin Commission
18
Drake, Avery Ala, 1927-
18
United States. Congress. House. Committee on Resources
17
Pennsylvania. Department of Environmental Resources
17
Reed, Lloyd A.
17
United States. Administration on Aging
16
Senior, Lisa A.
15
Pomeroy, John S., 1929-
14
America's Industrial Heritage Project
14
Conger, Randall W.
14
Educational Resources Information Center (U.S.)
14
Senior, Lisa A.,
14
United States. Department of the Interior. Southwestern Pennsylvania Heritage Preservation Commission
13
Reif, Andrew G.
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Genre
205
Maps
33
Statistics
32
Periodicals
24
Statutes and codes
22
Biographies
20
Case studies
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14
Fiction
14
Legislative hearings
14
Legislative materials
13
Technical reports
9
Topographic maps
8
Catalogs
8
Drama
8
Video recordings
7
Historical fiction
5
Bibliographies
5
Conference papers and proceedings
5
Diaries
5
Illustrated works
5
Novels
5
Tourist maps
4
Autobiographies
4
Electronic government information
4
Exhibition catalogs
4
Feature films
4
Guidebooks
4
Handbooks and manuals
4
Literature
4
Sources
3
Gazetteers
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Literary Form
Era
15
19th century
14
18th century
14
20th century
14
Revolution, 1775-1783
12
Colonial period, ca. 1600-1775
10
Ordovician
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8
Devonian
8
To 1775
6
1732-1799
5
1775-1865
5
Cambrian
5
Civil War, 1861-1865
5
Silurian
4
1706-1790
4
Cretaceous
4
Mississippian
4
Precambrian
3
1775-1783
3
Pennsylvanian
3
Permian
2
-2014
2
1644-1718
2
1731-1802
2
1761-1849
2
17th century
2
1872-1951
2
1883-1935
2
1890-1969
2
Paleozoic
1
-2003
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Region
Pennsylvania
144
Philadelphia
130
United States
68
Chester County
57
New Jersey
43
Pittsburgh
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40
Bucks County
38
New York (State)
33
Lancaster County
33
Schuylkill County
31
Maryland
28
Berks County
28
West Virginia
26
Allegheny County
24
Gettysburg National Military Park (Pa.)
23
Delaware
23
Philadelphia (Pa.)
21
Montgomery County
20
Allegheny National Forest
20
York County
19
Ohio
16
Fayette County
16
Lehigh County
16
Washington County
15
Cambria County
15
Lebanon County
15
Somerset County
14
Scranton
13
Adams County
13
Northampton County
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Call Number
117
T - Technology
114
G - Geography, Anthropology, Recreation
112
M - Music
101
E - United States History
100
Q - Science
99
K - Law
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94
H - Social Science
72
F - General American History
64
A - General Works
36
P - Language and Literature
17
L - Education
16
N - Fine Arts
14
J - Political Science
12
S - Agriculture
10
R - Medicine
10
V - Naval Science
7
B - Philosophy, Psychology, Religion
5
C - Historical Sciences
5
D - World History
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Year of Publication