Similar
Related
![Second Geological Survey of Pennsylvania, anthracite district, C[arbon & Schuylkill counties?]](https://cache.getarchive.net/Prod/thumb/cdn6/L3Bob3RvLzE4ODIvMDEvMDEvc2Vjb25kLWdlb2xvZ2ljYWwtc3VydmV5LW9mLXBlbm5zeWx2YW5pYS1hbnRocmFjaXRlLWRpc3RyaWN0LWNhcmJvbi1hbmQtc2NodXlsa2lsbC05YTFlYzMtNjQwLmpwZw%3D%3D/40/50/webp "Second Geological Survey of Pennsylvania, anthracite district, C[arbon & Schuylkill counties?]")
![[EPA Science Maine Coastal Survey 2] 412-DSP-2-Maine_Coastal_Survey_ND34501.jpg](https://cache.getarchive.net/Prod/thumb/cdn10/L3Bob3RvLzIwMTUvMDMvMTYvZXBhLXNjaWVuY2UtbWFpbmUtY29hc3RhbC1zdXJ2ZXktMi00MTItZHNwLTItbWFpbmVfY29hc3RhbF9zdXJ2ZXlfbmQzNDUwMWpwZy1jNWZjOWYtNjQwLmpwZw%3D%3D/40/59/webp "[EPA Science Maine Coastal Survey 2] 412-DSP-2-Maine_Coastal_Survey_ND34501.jpg")
Second Geological Survey of Pennsylvania Report of Progress PPP figure 2
Summary
Second Geological Survey of Pennsylvania. Report of Progress. PPP. Figure 2
Date
1884
Source
California/Internet Archive
Copyright info
public domain
Summary
Second Geological Survey of Pennsylvania. Report of Progress. PPP. Figure 2
Date
Source
Copyright info
