The geology of Erie and Crawford Counties.
By: By I. C. White. With...notes on the place of the Sharon Conglomerate in the Palaeozoic series. Discovery of the preglacial outlet of Lake Erie. By J. W. Spencer.
Contributors: Spencer, J. W. 1851-1921
Series: Pennsylvania. Geological Survey, 2d. Report of progress -- Q4; Report of progress (Geological Survey of Pennsylvania) -- Q4.
Publisher: Pub. by the Board of Commissioners for the Second Geological Survey
Published: 1881
Place of publication: Harrisburg
Language: eng
Number of pages: 406
Subjects: Geology -- Pennsylvania -- Erie County.; Geology -- Pennsylvania -- Crawford County.
Notes: At head of title: Second geological survey of Pennsylvania. Report of proress, 1879. QQQQ.