Geological survey of Pennsylvania.
Contributors: Ingham, William Armstrong, 1827-1913.
Publisher: Board of Commissioners for the Geological Survey
Published: 1892
Place of publication: Harrisburg
Language: eng; fre
Number of pages: 28
Subjects: Geology, Stratigraphic -- Paleozoic.; Geology -- Pennsylvania.; Coal -- Pennsylvania.
Other titles: Summary description of the geology of Pennsylvania in three volumes with a new geologic map of the state, and a map and list of bituminous mines.
Table of contents: title: v. 1. Laurentian, Huronian, Cambrian, and Lower Silurian formations, by J.P. Lesley.; title: v. 2. Upper Silurian and Devonian formations, by J.P. Lesley.; title: v. 3. pt. 1. Carboniferous formations, by J.P. Lesley, E.V. d'Invilliers, and A.D.W. Smith. pt. 2. Bituminous coal fields, by E.V. d'Invilliers. The new red of Bucks and Montgomery Counties, by B.S. Lyman.