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Geology
Geological surveys
2
Anthracite coal
1
Coal mines and mining
1
Sandstone
1
name
x
Geological Survey of Pennsylvania
Lesley, J. P. (J. Peter), 1819-1903
8
Hart, Lane S
6
Julius Bien & Co
3
Rogers, Henry D. (Henry Darwin), 1808-1866
2
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Maps of North America
9
place
Pennsylvania
9
Potter County
2
Potter County (Pa.)
2
Allegheny County
1
Allegheny County (Pa.)
1
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Geological maps
Maps
9
publisher
Second Geological Survey of Pennsylvania
4
Geological Survey of Pennsylvania
3
Geological Survey of Pennsylvania?
1
Pennsylvania Geological Survey
1
division
Map Division
9
type
cartographic
9
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9 results found
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: Geological Survey of Pennsylvania
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Geological map of Berks Count…
Geological and topographical …
Geological map of Potter Coun…
Geological map of Fayette Cou…
Geological map of Allegheny C…
Geological map of Fulton Coun…
Geological map of Potter Coun…
Geological map of the state o…
m
Geological map of Pennsylvani…