Special report on the trap dykes and Azoic rocks of southeastern Pennsylvania
By: By T. Sterry Hunt. Part I. Historical introduction.
Series: Pennsylvania. Geological survey, 2d. [Report of progress; E]; Report of progress (Geological Survey of Pennsylvania),; E.
Publisher: Pub. by the Board of commissioners for the Second geological survey
Published: 1878
Place of publication: Harrisburg
Language: eng
Number of pages: 253
Subjects: Geology -- Pennsylvania.; Geology, Stratigraphic -- Archaean.
Notes: At head of title: Second geological survey of Pennsylvania: 1875.
No more published.