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Institution
Collection
Format
Subject
27
Geology
12
Groundwater
12
Maryland
8
Aquifers
7
Magothy Aquifer
4
Delaware
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4
Mines and mineral resources
4
Montgomery County (Md.)
2
Geomagnetism
2
Landslides
2
Virginia
2
West Virginia
1
Agricultural museums
1
Aquatic habitats
1
Baltimore Region (Md.)
1
Catoctin Mountain Park (Md.)
1
Charles County (Md.)
1
Coal
1
Conodonts
1
Earthquakes
1
Engineering geology
1
Farms
1
Faults (Geology)
1
Frederick County (Md.)
1
Geology Maps
1
Greenbelt Park (Md.)
1
Hampton National Historic Site (Md.)
1
Hiking
1
Historic buildings
1
Historic sites
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Author
34
Geological Survey (U.S.)
19
Maryland Geological Survey
15
Geological Survey (U.S.),
11
Mack, Frederick K.,
8
Drake, Avery Ala, 1927-
6
Froelich, A. J. 1929-
more ...
5
Curtin, Stephen E.,
5
Maryland. Tidewater Administration
3
Gilbert, Francis P.
3
Glaser, John D.
3
Maryland. Energy Administration
3
Reinhardt, Juergen, 1946-
3
Southworth, Scott, 1957-
3
United States. Defense Mapping Agency. Hydrographic/Topographic Center
3
United States. National Park Service,
3
Wheeler, Judith C.,
2
Andreasen, David C.,
2
Crowley, William Patrick
2
Kuff, Karen R.
2
Lee, K. Y.
2
Maryland Power Plant Research Program
2
McCartan, Lucy
2
Pomeroy, John S., 1929-
1
Abram, E. C.
1
Algermissen, Sylvester Theodore, 1932-2006
1
Baltimore (Md.)
1
Banks, William S. L.
1
Boardman, Leona, 1894-1957
1
Bromery, Randolph W. 1926-2013
1
Cleaves, Emery T.
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Language
Genre
Region
Maryland
14
Montgomery County
14
Virginia
8
Delaware
7
Magothy Aquifer
6
Washington (D.C.)
more ...
5
Fairfax County
5
Prince George's County
4
Anne Arundel County
4
Baltimore County
4
Baltimore Region
4
Montgomery County (Md.)
4
West Virginia
3
Annapolis Region
3
Arlington County
3
Frederick County
3
Howard County
3
Loudoun County
2
Charles County
2
Culpeper Basin (Va. and Md.)
2
Pennsylvania
1
Baltimore Region (Md.)
1
Catoctin Mountain Park
1
Catoctin Mountain Park (Md.)
1
Cecil County
1
Charles County (Md.)
1
Culpeper Basin
1
Falls Church
1
Frederick County (Md.)
1
Fredericksburg Region
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Year of Publication