|
Second Geological Survey of Pennsylvania, anthracite district, Carbon & Schuylkill counties? / J.P. Lesley, State Geologist ; Chas. A. Ashburner, geologist in charge? ; geological assistants, A.W. Sheafer, Frank A. Hill ; aids, Arthur Winslow, H.I...
From Parts (In 6 layers) Depicts: 1882 Last modified 10 months ago. Unrectified. |
![]() |