The Cambrian rocks of Pennsylvania
By: by Charles Doolittle Walcott.
Series: Bulletin of the United States Geological Survey -- no. 134; Geological Survey bulletin -- 134.
Publisher: Govt. Print. Off.
Published: 1896
Place of publication: Washington
Language: eng
Number of pages: 43
Subjects: Geology -- Pennsylvania.; Geology, Stratigraphic -- Cambrian.; Rocks -- Pennsylvania.; Limestone -- Pennsylvania.; Conglomerate -- Pennsylvania.; Stratigraphic correlation -- Pennsylvania.
Notes: Issued also as House doc. no. 419, 54th Congress, 1st session.

Includes bibliographical references and index.