Includes appendix.Includes bibliographical references (p. 15-16).Mode of access: Internet
Reprinted from Transactions of the American institute of mining and metallurgical engineers, v. 14.c...
"Int.-Bu. of Mines, Pgh., Pa. 7681"--P. 17."September 1956."Includes bibliographical references.Mode...
"Special publication, Report on the coals of Maryland, volume V, part IV.At head of title : Maryland...
Bibliographical footnotes included.Other publications in the series: p. 22.Mode of access: Internet
"Int. Bu. of Mines, Pgh., Pa. 9804"--P. 16.Includes bibliographical references.Mode of access: Inter...
"Int. - Bu. of Mines, Pgh., Pa."--P. 16."September 1951."Includes bibliographical references.Mode of...
Appendix: The fire-clays of Clearfield county.In binder's title: Clearfield county revised.Mode of a...
Bibliographical references included.Other Bureau of Mines publications in this series: p. 21-23.Mode...
Bibliographical references included.Other publications in this series: p. 22.Mode of access: Interne...
"Analyses of coal, cannel, coke, clay, limestone, and ore, from Butler and Beaver counties, Pa., by ...
"Int.-Bu. of Mines, Pgh., Pa. 7750"--P. 19."October 1956."Includes bibliographical references.Mode o...
Includes appendixes.Issued June 1977.Prepared by University of South Carolina, Columbia, South Carol...
Folded plate and maps in pockets.pt. I. Eastern Allegheny county and Fayette and West-moreland count...
Appendix: Extracts from H. D. Rogers' Memoir on the coal formation of Pennsylvania ... of the final ...
Part of the illustrative matter is folded."References cited": p. 156-158.Mode of access: Internet
Reprinted from Transactions of the American institute of mining and metallurgical engineers, v. 14.c...
"Int.-Bu. of Mines, Pgh., Pa. 7681"--P. 17."September 1956."Includes bibliographical references.Mode...
"Special publication, Report on the coals of Maryland, volume V, part IV.At head of title : Maryland...
Bibliographical footnotes included.Other publications in the series: p. 22.Mode of access: Internet
"Int. Bu. of Mines, Pgh., Pa. 9804"--P. 16.Includes bibliographical references.Mode of access: Inter...
"Int. - Bu. of Mines, Pgh., Pa."--P. 16."September 1951."Includes bibliographical references.Mode of...
Appendix: The fire-clays of Clearfield county.In binder's title: Clearfield county revised.Mode of a...
Bibliographical references included.Other Bureau of Mines publications in this series: p. 21-23.Mode...
Bibliographical references included.Other publications in this series: p. 22.Mode of access: Interne...
"Analyses of coal, cannel, coke, clay, limestone, and ore, from Butler and Beaver counties, Pa., by ...
"Int.-Bu. of Mines, Pgh., Pa. 7750"--P. 19."October 1956."Includes bibliographical references.Mode o...
Includes appendixes.Issued June 1977.Prepared by University of South Carolina, Columbia, South Carol...
Folded plate and maps in pockets.pt. I. Eastern Allegheny county and Fayette and West-moreland count...
Appendix: Extracts from H. D. Rogers' Memoir on the coal formation of Pennsylvania ... of the final ...
Part of the illustrative matter is folded."References cited": p. 156-158.Mode of access: Internet
Reprinted from Transactions of the American institute of mining and metallurgical engineers, v. 14.c...
"Int.-Bu. of Mines, Pgh., Pa. 7681"--P. 17."September 1956."Includes bibliographical references.Mode...
"Special publication, Report on the coals of Maryland, volume V, part IV.At head of title : Maryland...