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Coal mines and mining
Geology
3
Anthracite coal
2
Anthracite coal industry
1
Iron mines and mining
1
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name
x
Geological Survey of Pennsylvania
Hart, Lane S
3
Lesley, J. P. (J. Peter), 1819-1903
3
Ashburner, Charles A. (Charles Albert), 1854-1889
2
Julius Bien & Co
2
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collection
Maps of North America
4
place
Pennsylvania
4
Cambria County
1
Cambria County (Pa.)
1
Johnstown (Cambria County)
1
Johnstown (Cambria County, Pa.)
1
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genre
x
Maps
Charts
1
Diagrams
1
Geological cross-sections
1
Geological maps
1
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publisher
Geological Survey of Pennsylvania
2
Geological Survey of Pennsylvania?
2
division
Map Division
4
type
cartographic
4
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4 results found
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: Geological Survey of Pennsylvania
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Topic
: Coal mines and mining
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General map of the anthracite…
Topographical map of the coal…
Geological and topographical …
[S]econd Geolo[gical Survey o…