Appendix: Extracts from H. D. Rogers' Memoir on the coal formation of Pennsylvania ... of the final report of the geology of Pennsylvania.At head of title: Second geological survey of Pennsylvania: 1874.In Pennsylvania. Geological survey. [Report of progress H1Mode of access: Internet
Paged continuously.vol. I. Laurentian, Huronian, Cambrian and Lower Silurian formations, J. P. Lesle...
Appendices: A. From Geology of Pennsylvania, vol. I ... by H. D. Rogers.--B. Notes on the Mehoopeny ...
Description of the fossils in the Wyoming valley limestone-beds, by Angelo Heilprin: 1885.First repo...
viiiH, 296H p. front., plates (part fold.) maps (part fold.) diagrs. 22 1/2cm.In Pennsylvania. Geolo...
Appendix A to Report of progress R (not listed in above index) was issued in 1881 with title: Drilli...
x K, 420 K, p. plates, fold. maps. 22 1/2cm.(In Pennsylvania. Geological survey, 2d. [Report of prog...
"Analyses of coal, cannel, coke, clay, limestone, and ore, from Butler and Beaver counties, Pa., by ...
Appendices: A. Section of the Palæozoic rocks in Blair county, by F. Platt and R.H. Sanders.--B.A. m...
2 p. l., B v. 206B p. fold. map. 22 1/2cm.At head of title: Second geological survey of Pennsylvania...
Appendix: Some general notes on the occurrence of copper ores in a few well known localities in the ...
At head of title: Second geological survey of Pennsylvania. Report of progress. F3 1888-1889.Mode of...
Appendices: A. Mine laws.--B. A glossary of mining terms.--C. Production and distribution of anthrac...
Vol. II, pt. I-II, paged continuously.Vol. 2 has title: The geology of Pennsylvania; a government su...
Extra report issued in 1913 with distinctive title: the Broad-top coal field of Huntingdon, Bedford ...
Folded plate and maps in pockets.pt. I. Eastern Allegheny county and Fayette and West-moreland count...
Paged continuously.vol. I. Laurentian, Huronian, Cambrian and Lower Silurian formations, J. P. Lesle...
Appendices: A. From Geology of Pennsylvania, vol. I ... by H. D. Rogers.--B. Notes on the Mehoopeny ...
Description of the fossils in the Wyoming valley limestone-beds, by Angelo Heilprin: 1885.First repo...
viiiH, 296H p. front., plates (part fold.) maps (part fold.) diagrs. 22 1/2cm.In Pennsylvania. Geolo...
Appendix A to Report of progress R (not listed in above index) was issued in 1881 with title: Drilli...
x K, 420 K, p. plates, fold. maps. 22 1/2cm.(In Pennsylvania. Geological survey, 2d. [Report of prog...
"Analyses of coal, cannel, coke, clay, limestone, and ore, from Butler and Beaver counties, Pa., by ...
Appendices: A. Section of the Palæozoic rocks in Blair county, by F. Platt and R.H. Sanders.--B.A. m...
2 p. l., B v. 206B p. fold. map. 22 1/2cm.At head of title: Second geological survey of Pennsylvania...
Appendix: Some general notes on the occurrence of copper ores in a few well known localities in the ...
At head of title: Second geological survey of Pennsylvania. Report of progress. F3 1888-1889.Mode of...
Appendices: A. Mine laws.--B. A glossary of mining terms.--C. Production and distribution of anthrac...
Vol. II, pt. I-II, paged continuously.Vol. 2 has title: The geology of Pennsylvania; a government su...
Extra report issued in 1913 with distinctive title: the Broad-top coal field of Huntingdon, Bedford ...
Folded plate and maps in pockets.pt. I. Eastern Allegheny county and Fayette and West-moreland count...
Paged continuously.vol. I. Laurentian, Huronian, Cambrian and Lower Silurian formations, J. P. Lesle...
Appendices: A. From Geology of Pennsylvania, vol. I ... by H. D. Rogers.--B. Notes on the Mehoopeny ...
Description of the fossils in the Wyoming valley limestone-beds, by Angelo Heilprin: 1885.First repo...