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topic
Geology
4
Coal
3
name
Geological Survey of Pennsylvania
7
Hart, Lane S
7
Lesley, J. P. (J. Peter), 1819-1903
7
White, I. C. (Israel Charles), 1848-1927
4
Julius Bien & Co
2
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collection
Maps of North America
7
place
Pennsylvania
7
Allegheny County
2
Allegheny County (Pa.)
2
Beaver County
1
Beaver County (Pa.)
1
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genre
Maps
7
Geological maps
4
publisher
x
Second Geological Survey of Pennsylvania
division
Map Division
7
type
cartographic
7
Date Range
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Harrisburg (Pa.)
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: Second Geological Survey of Pennsylvania
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Geological map of Fulton Coun…
Map of southern Butler County…
Geological map of Berks Count…
Geological map of Fayette Cou…
Geological map of Allegheny C…
Map of North Allegheny, showi…
Map of Beaver County showing …