Online (PDF) Geological Survey Of Pennsylvania Pt 1 Carboniferous Formations By Jp Lesley Ev Dinvilliers And Adw Smith Pt 2 Bituminous Coal Fields By Ev Dinvilliers The New Red Of Bucks And Montgomery Counties By Bs Lyman eBook

Language: en
Pages: 756

Authors: Geological Survey of Pennsylvania

Categories: Coal

Type: BOOK - Published: 1895 - Publisher:

Language: en
Pages:

Authors: Geological Survey of Pennsylvania

Categories: Coal

Type: BOOK - Published: 1892 - Publisher:

Language: en
Pages: 778

Authors: United States. Bureau of Mines. Technical Library, Pittsburgh

Categories: Library catalogs

Type: BOOK - Published: 1968 - Publisher:

Language: en
Pages: 792

Authors: United States. Bureau of Mines. Technical Library, Pittsburgh

Categories: Library catalogs

Type: BOOK - Published: 1968 - Publisher:

Language: en
Pages: 740

Authors: American Museum of Natural History. Library

Categories: Natural history

Type: BOOK - Published: 1977 - Publisher: